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Initial samples: TodoApp and ShellDemo 

Two sample applications demonstrating OpenMaui Linux:

TodoApp:
- Full task manager with NavigationPage
- CollectionView with XAML data binding
- DisplayAlert dialogs
- Grid layouts with star sizing

ShellDemo:
- Comprehensive control showcase
- Shell with flyout navigation
- All core MAUI controls demonstrated
- Real-time event logging

Both samples reference OpenMaui.Controls.Linux via NuGet.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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# Build results
[Bb]in/
[Oo]bj/
[Oo]ut/
[Ll]og/
[Ll]ogs/
# .NET
*.nupkg
*.snupkg
*.user
*.suo
*.userprefs
*.cache
project.lock.json
project.fragment.lock.json
artifacts/
# Visual Studio
.vs/
*.csproj.user
*.dbmdl
*.jfm
# JetBrains Rider
.idea/
*.sln.iml
# Visual Studio Code
.vscode/
# macOS
.DS_Store
# User-specific files
*.rsuser
*.suo
*.user
*.userosscache
*.sln.docstates
# Test Results
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
TestResults/
# NuGet
*.nupkg
**/[Pp]ackages/*
!**/[Pp]ackages/build/
# Publish output
publish/

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MIT License
Copyright (c) 2024 OpenMaui
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# OpenMaui Linux Samples
Sample applications demonstrating [OpenMaui Linux](https://github.com/open-maui/maui-linux) - .NET MAUI on Linux.
## Samples
| Sample | Description |
|--------|-------------|
| [TodoApp](./TodoApp/) | Full-featured task manager with NavigationPage, XAML data binding, and CollectionView |
| [ShellDemo](./ShellDemo/) | Comprehensive control showcase with Shell navigation and flyout menu |
## Requirements
- .NET 9.0 SDK
- Linux with X11 (Ubuntu, Fedora, etc.)
- SkiaSharp dependencies: `libfontconfig1-dev libfreetype6-dev`
## Quick Start
```bash
# Clone the samples
git clone https://github.com/open-maui/maui-linux-samples.git
cd maui-linux-samples
# Run TodoApp
cd TodoApp
dotnet run
# Or run ShellDemo
cd ../ShellDemo
dotnet run
```
## Building for Deployment
```bash
# Build for Linux ARM64
dotnet publish -c Release -r linux-arm64
# Build for Linux x64
dotnet publish -c Release -r linux-x64
```
## TodoApp
A complete task management application demonstrating:
- NavigationPage with toolbar and back navigation
- CollectionView with data binding and selection
- XAML value converters for dynamic styling
- DisplayAlert dialogs
- Grid layouts with star sizing
- Entry and Editor text input
![TodoApp Screenshot](docs/images/todoapp.png)
## ShellDemo
A comprehensive control gallery demonstrating:
- Shell with flyout menu navigation
- All core MAUI controls (Button, Entry, CheckBox, Switch, Slider, etc.)
- Picker, DatePicker, TimePicker
- CollectionView with various item types
- ProgressBar and ActivityIndicator
- Grid layouts
- Real-time event logging
![ShellDemo Screenshot](docs/images/shelldemo.png)
## Related
- [OpenMaui Linux Framework](https://github.com/open-maui/maui-linux) - The core framework
- [NuGet Package](https://www.nuget.org/packages/OpenMaui.Controls.Linux) - Install via NuGet
## License
MIT License - See [LICENSE](LICENSE) for details.

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// ShellDemo App - Comprehensive Control Demo
using Microsoft.Maui.Controls;
namespace ShellDemo;
/// <summary>
/// Main application class with Shell navigation.
/// </summary>
public class App : Application
{
public App()
{
MainPage = new AppShell();
}
}
/// <summary>
/// Shell definition with flyout menu - comprehensive control demo.
/// </summary>
public class AppShell : Shell
{
public AppShell()
{
FlyoutBehavior = FlyoutBehavior.Flyout;
Title = "OpenMaui Controls Demo";
// Register routes for push navigation (pages not in flyout)
Routing.RegisterRoute("detail", typeof(DetailPage));
// Home
Items.Add(CreateFlyoutItem("Home", typeof(HomePage)));
// Buttons Demo
Items.Add(CreateFlyoutItem("Buttons", typeof(ButtonsPage)));
// Text Input Demo
Items.Add(CreateFlyoutItem("Text Input", typeof(TextInputPage)));
// Selection Controls Demo
Items.Add(CreateFlyoutItem("Selection", typeof(SelectionPage)));
// Pickers Demo
Items.Add(CreateFlyoutItem("Pickers", typeof(PickersPage)));
// Lists Demo
Items.Add(CreateFlyoutItem("Lists", typeof(ListsPage)));
// Progress Demo
Items.Add(CreateFlyoutItem("Progress", typeof(ProgressPage)));
// Grids Demo
Items.Add(CreateFlyoutItem("Grids", typeof(GridsPage)));
// About
Items.Add(CreateFlyoutItem("About", typeof(AboutPage)));
}
private FlyoutItem CreateFlyoutItem(string title, Type pageType)
{
// Route is required for Shell.GoToAsync navigation to work
var route = title.Replace(" ", "");
return new FlyoutItem
{
Title = title,
Route = route,
Items =
{
new ShellContent
{
Title = title,
Route = route,
ContentTemplate = new DataTemplate(pageType)
}
}
};
}
}

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// MauiProgram.cs - Shared MAUI app configuration
// Works across all platforms (iOS, Android, Windows, Linux)
using Microsoft.Maui.Hosting;
using Microsoft.Maui.Platform.Linux.Hosting;
namespace ShellDemo;
public static class MauiProgram
{
public static MauiApp CreateMauiApp()
{
var builder = MauiApp.CreateBuilder();
// Configure the app (shared across all platforms)
builder.UseMauiApp<App>();
// Add Linux platform support
// On other platforms, this would be iOS/Android/Windows specific
builder.UseLinux();
return builder.Build();
}
}

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// AboutPage - Information about OpenMaui Linux
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class AboutPage : ContentPage
{
public AboutPage()
{
Title = "About";
Content = new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 20,
Children =
{
new Label
{
Text = "OpenMaui Linux",
FontSize = 32,
FontAttributes = FontAttributes.Bold,
TextColor = Color.FromArgb("#1A237E"),
HorizontalOptions = LayoutOptions.Center
},
new Label
{
Text = "Version 1.0.0",
FontSize = 16,
TextColor = Colors.Gray,
HorizontalOptions = LayoutOptions.Center
},
new BoxView { HeightRequest = 1, Color = Colors.LightGray },
new Label
{
Text = "OpenMaui Linux brings .NET MAUI to Linux desktops using SkiaSharp for rendering. " +
"It provides a native Linux experience while maintaining compatibility with MAUI's cross-platform API.",
FontSize = 14,
LineBreakMode = LineBreakMode.WordWrap
},
CreateInfoCard("Platform", "Linux (X11/Wayland)"),
CreateInfoCard("Rendering", "SkiaSharp"),
CreateInfoCard("Framework", ".NET MAUI"),
CreateInfoCard("License", "MIT License"),
new BoxView { HeightRequest = 1, Color = Colors.LightGray },
new Label
{
Text = "Features",
FontSize = 20,
FontAttributes = FontAttributes.Bold
},
CreateFeatureItem("Full XAML support with styles and resources"),
CreateFeatureItem("Shell navigation with flyout menus"),
CreateFeatureItem("All standard MAUI controls"),
CreateFeatureItem("Data binding and MVVM"),
CreateFeatureItem("Keyboard and mouse input"),
CreateFeatureItem("High DPI support"),
new BoxView { HeightRequest = 1, Color = Colors.LightGray },
new Label
{
Text = "https://github.com/pablotoledo/OpenMaui-Linux",
FontSize = 12,
TextColor = Colors.Blue,
HorizontalOptions = LayoutOptions.Center
}
}
}
};
}
private Frame CreateInfoCard(string label, string value)
{
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Color.FromArgb("#F5F5F5"),
HasShadow = false,
Content = new HorizontalStackLayout
{
Children =
{
new Label
{
Text = label + ":",
FontAttributes = FontAttributes.Bold,
WidthRequest = 100
},
new Label
{
Text = value,
TextColor = Colors.Gray
}
}
}
};
}
private View CreateFeatureItem(string text)
{
return new HorizontalStackLayout
{
Spacing = 10,
Children =
{
new Label { Text = "✓", TextColor = Color.FromArgb("#4CAF50"), FontSize = 16 },
new Label { Text = text, FontSize = 14 }
}
};
}
}

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// ButtonsPage - Comprehensive Button Control Demo
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class ButtonsPage : ContentPage
{
private readonly Label _eventLog;
private int _eventCount = 0;
public ButtonsPage()
{
Title = "Buttons Demo";
_eventLog = new Label
{
Text = "Events will appear here...",
FontSize = 11,
TextColor = Colors.Gray,
LineBreakMode = LineBreakMode.WordWrap
};
Content = new Grid
{
RowDefinitions =
{
new RowDefinition { Height = new GridLength(1, GridUnitType.Star) },
new RowDefinition { Height = new GridLength(120) }
},
Children =
{
CreateMainContent(),
CreateEventLogPanel()
}
};
Grid.SetRow((View)((Grid)Content).Children[0], 0);
Grid.SetRow((View)((Grid)Content).Children[1], 1);
}
private View CreateMainContent()
{
return new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 20,
Children =
{
new Label { Text = "Button Styles & Events", FontSize = 24, FontAttributes = FontAttributes.Bold },
// Basic Buttons
CreateSection("Basic Buttons", CreateBasicButtons()),
// Styled Buttons
CreateSection("Styled Buttons", CreateStyledButtons()),
// Button States
CreateSection("Button States", CreateButtonStates()),
// Button with Icons (text simulation)
CreateSection("Button Variations", CreateButtonVariations())
}
}
};
}
private View CreateBasicButtons()
{
var layout = new VerticalStackLayout { Spacing = 10 };
var defaultBtn = new Button { Text = "Default Button" };
defaultBtn.Clicked += (s, e) => LogEvent("Default Button clicked");
defaultBtn.Pressed += (s, e) => LogEvent("Default Button pressed");
defaultBtn.Released += (s, e) => LogEvent("Default Button released");
var textBtn = new Button { Text = "Text Only", BackgroundColor = Colors.Transparent, TextColor = Colors.Blue };
textBtn.Clicked += (s, e) => LogEvent("Text Button clicked");
layout.Children.Add(defaultBtn);
layout.Children.Add(textBtn);
return layout;
}
private View CreateStyledButtons()
{
var layout = new HorizontalStackLayout { Spacing = 10 };
var colors = new[]
{
("#2196F3", "Primary"),
("#4CAF50", "Success"),
("#FF9800", "Warning"),
("#F44336", "Danger"),
("#9C27B0", "Purple")
};
foreach (var (color, name) in colors)
{
var btn = new Button
{
Text = name,
BackgroundColor = Color.FromArgb(color),
TextColor = Colors.White,
CornerRadius = 5
};
btn.Clicked += (s, e) => LogEvent($"{name} button clicked");
layout.Children.Add(btn);
}
return layout;
}
private View CreateButtonStates()
{
var layout = new VerticalStackLayout { Spacing = 10 };
var enabledBtn = new Button { Text = "Enabled Button", IsEnabled = true };
enabledBtn.Clicked += (s, e) => LogEvent("Enabled button clicked");
var disabledBtn = new Button { Text = "Disabled Button", IsEnabled = false };
var toggleBtn = new Button { Text = "Toggle Above Button" };
toggleBtn.Clicked += (s, e) =>
{
disabledBtn.IsEnabled = !disabledBtn.IsEnabled;
disabledBtn.Text = disabledBtn.IsEnabled ? "Now Enabled!" : "Disabled Button";
LogEvent($"Toggled button to: {(disabledBtn.IsEnabled ? "Enabled" : "Disabled")}");
};
layout.Children.Add(enabledBtn);
layout.Children.Add(disabledBtn);
layout.Children.Add(toggleBtn);
return layout;
}
private View CreateButtonVariations()
{
var layout = new VerticalStackLayout { Spacing = 10 };
var wideBtn = new Button
{
Text = "Wide Button",
HorizontalOptions = LayoutOptions.Fill,
BackgroundColor = Color.FromArgb("#673AB7"),
TextColor = Colors.White
};
wideBtn.Clicked += (s, e) => LogEvent("Wide button clicked");
var tallBtn = new Button
{
Text = "Tall Button",
HeightRequest = 60,
BackgroundColor = Color.FromArgb("#009688"),
TextColor = Colors.White
};
tallBtn.Clicked += (s, e) => LogEvent("Tall button clicked");
var roundBtn = new Button
{
Text = "Round",
WidthRequest = 80,
HeightRequest = 80,
CornerRadius = 40,
BackgroundColor = Color.FromArgb("#E91E63"),
TextColor = Colors.White
};
roundBtn.Clicked += (s, e) => LogEvent("Round button clicked");
layout.Children.Add(wideBtn);
layout.Children.Add(tallBtn);
layout.Children.Add(new HorizontalStackLayout { Children = { roundBtn } });
return layout;
}
private Frame CreateSection(string title, View content)
{
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Colors.White,
Content = new VerticalStackLayout
{
Spacing = 10,
Children =
{
new Label { Text = title, FontSize = 16, FontAttributes = FontAttributes.Bold },
content
}
}
};
}
private View CreateEventLogPanel()
{
return new Frame
{
BackgroundColor = Color.FromArgb("#F5F5F5"),
Padding = new Thickness(10),
CornerRadius = 0,
Content = new VerticalStackLayout
{
Children =
{
new Label { Text = "Event Log:", FontSize = 12, FontAttributes = FontAttributes.Bold },
new ScrollView
{
HeightRequest = 80,
Content = _eventLog
}
}
}
};
}
private void LogEvent(string message)
{
_eventCount++;
var timestamp = DateTime.Now.ToString("HH:mm:ss");
_eventLog.Text = $"[{timestamp}] {_eventCount}. {message}\n{_eventLog.Text}";
}
}

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// ControlsPage - Demonstrates various MAUI controls
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class ControlsPage : ContentPage
{
public ControlsPage()
{
Title = "Controls";
Content = new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 15,
Children =
{
new Label
{
Text = "Control Gallery",
FontSize = 24,
FontAttributes = FontAttributes.Bold
},
// Buttons
CreateSection("Buttons", new View[]
{
CreateButtonRow()
}),
// CheckBox & Switch
CreateSection("Selection", new View[]
{
CreateCheckBoxRow(),
CreateSwitchRow()
}),
// Slider
CreateSection("Slider", new View[]
{
CreateSliderRow()
}),
// Picker
CreateSection("Picker", new View[]
{
CreatePickerRow()
}),
// Progress
CreateSection("Progress", new View[]
{
CreateProgressRow()
})
}
}
};
}
private Frame CreateSection(string title, View[] content)
{
var layout = new VerticalStackLayout { Spacing = 10 };
layout.Children.Add(new Label
{
Text = title,
FontSize = 18,
FontAttributes = FontAttributes.Bold
});
foreach (var view in content)
{
layout.Children.Add(view);
}
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Colors.White,
Content = layout
};
}
private View CreateButtonRow()
{
var resultLabel = new Label { TextColor = Colors.Gray, FontSize = 12 };
var layout = new VerticalStackLayout { Spacing = 10 };
var buttonRow = new HorizontalStackLayout { Spacing = 10 };
var primaryBtn = new Button { Text = "Primary", BackgroundColor = Color.FromArgb("#2196F3"), TextColor = Colors.White };
primaryBtn.Clicked += (s, e) => resultLabel.Text = "Primary clicked!";
var successBtn = new Button { Text = "Success", BackgroundColor = Color.FromArgb("#4CAF50"), TextColor = Colors.White };
successBtn.Clicked += (s, e) => resultLabel.Text = "Success clicked!";
var dangerBtn = new Button { Text = "Danger", BackgroundColor = Color.FromArgb("#F44336"), TextColor = Colors.White };
dangerBtn.Clicked += (s, e) => resultLabel.Text = "Danger clicked!";
buttonRow.Children.Add(primaryBtn);
buttonRow.Children.Add(successBtn);
buttonRow.Children.Add(dangerBtn);
layout.Children.Add(buttonRow);
layout.Children.Add(resultLabel);
return layout;
}
private View CreateCheckBoxRow()
{
var layout = new HorizontalStackLayout { Spacing = 20 };
var cb1 = new CheckBox { IsChecked = true };
var cb2 = new CheckBox { IsChecked = false };
layout.Children.Add(cb1);
layout.Children.Add(new Label { Text = "Option 1", VerticalOptions = LayoutOptions.Center });
layout.Children.Add(cb2);
layout.Children.Add(new Label { Text = "Option 2", VerticalOptions = LayoutOptions.Center });
return layout;
}
private View CreateSwitchRow()
{
var label = new Label { Text = "Off", VerticalOptions = LayoutOptions.Center };
var sw = new Switch { IsToggled = false };
sw.Toggled += (s, e) => label.Text = e.Value ? "On" : "Off";
return new HorizontalStackLayout
{
Spacing = 10,
Children = { sw, label }
};
}
private View CreateSliderRow()
{
var label = new Label { Text = "Value: 50" };
var slider = new Slider { Minimum = 0, Maximum = 100, Value = 50 };
slider.ValueChanged += (s, e) => label.Text = $"Value: {(int)e.NewValue}";
return new VerticalStackLayout
{
Spacing = 5,
Children = { slider, label }
};
}
private View CreatePickerRow()
{
var label = new Label { Text = "Selected: (none)", TextColor = Colors.Gray };
var picker = new Picker { Title = "Select a fruit" };
picker.Items.Add("Apple");
picker.Items.Add("Banana");
picker.Items.Add("Cherry");
picker.Items.Add("Date");
picker.Items.Add("Elderberry");
picker.SelectedIndexChanged += (s, e) =>
{
if (picker.SelectedIndex >= 0)
label.Text = $"Selected: {picker.Items[picker.SelectedIndex]}";
};
return new VerticalStackLayout
{
Spacing = 5,
Children = { picker, label }
};
}
private View CreateProgressRow()
{
var progress = new ProgressBar { Progress = 0.7 };
var activity = new ActivityIndicator { IsRunning = true };
return new VerticalStackLayout
{
Spacing = 10,
Children =
{
progress,
new Label { Text = "70% Complete", FontSize = 12, TextColor = Colors.Gray },
new HorizontalStackLayout
{
Spacing = 10,
Children =
{
activity,
new Label { Text = "Loading...", VerticalOptions = LayoutOptions.Center, TextColor = Colors.Gray }
}
}
}
};
}
}

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// DetailPage - Demonstrates push/pop navigation
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
using Microsoft.Maui.Platform.Linux.Hosting;
namespace ShellDemo;
/// <summary>
/// A detail page that can be pushed onto the navigation stack.
/// </summary>
public class DetailPage : ContentPage
{
private readonly string _itemName;
public DetailPage() : this("Detail Item")
{
}
public DetailPage(string itemName)
{
_itemName = itemName;
Title = "Detail Page";
Content = new VerticalStackLayout
{
Padding = new Thickness(30),
Spacing = 20,
VerticalOptions = LayoutOptions.Center,
Children =
{
new Label
{
Text = "Pushed Page",
FontSize = 28,
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.FromArgb("#9C27B0")
},
new Label
{
Text = $"You navigated to: {_itemName}",
FontSize = 16,
HorizontalOptions = LayoutOptions.Center
},
new Label
{
Text = "This page was pushed onto the navigation stack using Shell.Current.GoToAsync()",
FontSize = 14,
TextColor = Colors.Gray,
HorizontalTextAlignment = TextAlignment.Center,
LineBreakMode = LineBreakMode.WordWrap
},
new BoxView
{
HeightRequest = 2,
Color = Color.FromArgb("#E0E0E0"),
Margin = new Thickness(0, 20)
},
CreateBackButton(),
new Label
{
Text = "Use the back button above or the hardware/gesture back to pop this page",
FontSize = 12,
TextColor = Colors.Gray,
HorizontalTextAlignment = TextAlignment.Center,
Margin = new Thickness(0, 20, 0, 0)
}
}
};
}
private Button CreateBackButton()
{
var backBtn = new Button
{
Text = "Go Back (Pop)",
BackgroundColor = Color.FromArgb("#9C27B0"),
TextColor = Colors.White,
HorizontalOptions = LayoutOptions.Center,
Padding = new Thickness(30, 10)
};
backBtn.Clicked += (s, e) =>
{
// Pop this page off the navigation stack using LinuxViewRenderer
Console.WriteLine("[DetailPage] Go Back clicked");
var success = LinuxViewRenderer.PopPage();
Console.WriteLine($"[DetailPage] PopPage result: {success}");
};
return backBtn;
}
}
/// <summary>
/// Query property for passing data to DetailPage.
/// </summary>
[QueryProperty(nameof(ItemName), "item")]
public class DetailPageWithQuery : DetailPage
{
private string _itemName = "Item";
public string ItemName
{
get => _itemName;
set
{
_itemName = value;
// Update the title when the property is set
Title = $"Detail: {value}";
}
}
public DetailPageWithQuery() : base()
{
}
}

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// GridsPage - Demonstrates Grid layouts with various options
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class GridsPage : ContentPage
{
public GridsPage()
{
Title = "Grids";
Content = new ScrollView
{
Orientation = ScrollOrientation.Both,
Content = new VerticalStackLayout
{
Spacing = 25,
Children =
{
CreateSectionHeader("Basic Grid (2x2)"),
CreateBasicGrid(),
CreateSectionHeader("Column Definitions"),
CreateColumnDefinitionsDemo(),
CreateSectionHeader("Row Definitions"),
CreateRowDefinitionsDemo(),
CreateSectionHeader("Auto Rows (Empty vs Content)"),
CreateAutoRowsDemo(),
CreateSectionHeader("Star Sizing (Proportional)"),
CreateStarSizingDemo(),
CreateSectionHeader("Row & Column Spacing"),
CreateSpacingDemo(),
CreateSectionHeader("Row & Column Span"),
CreateSpanDemo(),
CreateSectionHeader("Mixed Sizing"),
CreateMixedSizingDemo(),
CreateSectionHeader("Nested Grids"),
CreateNestedGridDemo(),
new BoxView { HeightRequest = 20 } // Bottom padding
}
}
};
}
private Label CreateSectionHeader(string text)
{
return new Label
{
Text = text,
FontSize = 18,
FontAttributes = FontAttributes.Bold,
TextColor = Color.FromArgb("#2196F3"),
Margin = new Thickness(0, 10, 0, 5)
};
}
private View CreateBasicGrid()
{
var grid = new Grid
{
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
},
BackgroundColor = Color.FromArgb("#F5F5F5")
};
var cell1 = CreateCell("Row 0, Col 0", "#E3F2FD");
var cell2 = CreateCell("Row 0, Col 1", "#E8F5E9");
var cell3 = CreateCell("Row 1, Col 0", "#FFF3E0");
var cell4 = CreateCell("Row 1, Col 1", "#FCE4EC");
Grid.SetRow(cell1, 0); Grid.SetColumn(cell1, 0);
Grid.SetRow(cell2, 0); Grid.SetColumn(cell2, 1);
Grid.SetRow(cell3, 1); Grid.SetColumn(cell3, 0);
Grid.SetRow(cell4, 1); Grid.SetColumn(cell4, 1);
grid.Children.Add(cell1);
grid.Children.Add(cell2);
grid.Children.Add(cell3);
grid.Children.Add(cell4);
return CreateDemoContainer(grid, "Equal columns using Star sizing");
}
private View CreateColumnDefinitionsDemo()
{
var stack = new VerticalStackLayout { Spacing = 15 };
// Auto width columns
var autoGrid = new Grid
{
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Auto },
new ColumnDefinition { Width = GridLength.Auto },
new ColumnDefinition { Width = GridLength.Auto }
},
BackgroundColor = Color.FromArgb("#F5F5F5")
};
var a1 = CreateCell("Auto", "#BBDEFB");
var a2 = CreateCell("Auto Width", "#C8E6C9");
var a3 = CreateCell("A", "#FFECB3");
Grid.SetColumn(a1, 0);
Grid.SetColumn(a2, 1);
Grid.SetColumn(a3, 2);
autoGrid.Children.Add(a1);
autoGrid.Children.Add(a2);
autoGrid.Children.Add(a3);
stack.Children.Add(new Label { Text = "Auto: Sizes to content", FontSize = 12, TextColor = Colors.Gray });
stack.Children.Add(autoGrid);
// Absolute width columns
var absoluteGrid = new Grid
{
ColumnDefinitions =
{
new ColumnDefinition { Width = new GridLength(50) },
new ColumnDefinition { Width = new GridLength(100) },
new ColumnDefinition { Width = new GridLength(150) }
},
BackgroundColor = Color.FromArgb("#F5F5F5")
};
var b1 = CreateCell("50px", "#BBDEFB");
var b2 = CreateCell("100px", "#C8E6C9");
var b3 = CreateCell("150px", "#FFECB3");
Grid.SetColumn(b1, 0);
Grid.SetColumn(b2, 1);
Grid.SetColumn(b3, 2);
absoluteGrid.Children.Add(b1);
absoluteGrid.Children.Add(b2);
absoluteGrid.Children.Add(b3);
stack.Children.Add(new Label { Text = "Absolute: Fixed pixel widths (50, 100, 150)", FontSize = 12, TextColor = Colors.Gray, Margin = new Thickness(0, 10, 0, 0) });
stack.Children.Add(absoluteGrid);
return stack;
}
private View CreateRowDefinitionsDemo()
{
var grid = new Grid
{
WidthRequest = 200,
RowDefinitions =
{
new RowDefinition { Height = new GridLength(30) },
new RowDefinition { Height = new GridLength(50) },
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = new GridLength(40) }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star }
},
BackgroundColor = Color.FromArgb("#F5F5F5")
};
var r1 = CreateCell("30px height", "#BBDEFB");
var r2 = CreateCell("50px height", "#C8E6C9");
var r3 = CreateCell("Auto height\n(fits content)", "#FFECB3");
var r4 = CreateCell("40px height", "#F8BBD9");
Grid.SetRow(r1, 0);
Grid.SetRow(r2, 1);
Grid.SetRow(r3, 2);
Grid.SetRow(r4, 3);
grid.Children.Add(r1);
grid.Children.Add(r2);
grid.Children.Add(r3);
grid.Children.Add(r4);
return CreateDemoContainer(grid, "Different row heights: 30px, 50px, Auto, 40px");
}
private View CreateAutoRowsDemo()
{
var stack = new VerticalStackLayout { Spacing = 15 };
// Grid with empty Auto row
var emptyAutoGrid = new Grid
{
WidthRequest = 250,
RowDefinitions =
{
new RowDefinition { Height = new GridLength(40) },
new RowDefinition { Height = GridLength.Auto }, // Empty - should collapse
new RowDefinition { Height = new GridLength(40) }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star }
},
BackgroundColor = Color.FromArgb("#E0E0E0")
};
var r1 = CreateCell("Row 0: 40px", "#BBDEFB");
// Row 1 is Auto with NO content - should be 0 height
var r3 = CreateCell("Row 2: 40px", "#C8E6C9");
Grid.SetRow(r1, 0);
Grid.SetRow(r3, 2); // Skip row 1
emptyAutoGrid.Children.Add(r1);
emptyAutoGrid.Children.Add(r3);
stack.Children.Add(new Label { Text = "Empty Auto row (Row 1) should collapse to 0 height:", FontSize = 12, TextColor = Colors.Gray });
stack.Children.Add(emptyAutoGrid);
// Grid with Auto row that has content
var contentAutoGrid = new Grid
{
WidthRequest = 250,
RowDefinitions =
{
new RowDefinition { Height = new GridLength(40) },
new RowDefinition { Height = GridLength.Auto }, // Has content
new RowDefinition { Height = new GridLength(40) }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star }
},
BackgroundColor = Color.FromArgb("#E0E0E0")
};
var c1 = CreateCell("Row 0: 40px", "#BBDEFB");
var c2 = CreateCell("Row 1: Auto (sized to this content)", "#FFECB3");
var c3 = CreateCell("Row 2: 40px", "#C8E6C9");
Grid.SetRow(c1, 0);
Grid.SetRow(c2, 1);
Grid.SetRow(c3, 2);
contentAutoGrid.Children.Add(c1);
contentAutoGrid.Children.Add(c2);
contentAutoGrid.Children.Add(c3);
stack.Children.Add(new Label { Text = "Auto row with content sizes to fit:", FontSize = 12, TextColor = Colors.Gray, Margin = new Thickness(0, 10, 0, 0) });
stack.Children.Add(contentAutoGrid);
return stack;
}
private View CreateStarSizingDemo()
{
var grid = new Grid
{
ColumnDefinitions =
{
new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) },
new ColumnDefinition { Width = new GridLength(2, GridUnitType.Star) },
new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) }
},
BackgroundColor = Color.FromArgb("#F5F5F5")
};
var s1 = CreateCell("1*", "#BBDEFB");
var s2 = CreateCell("2* (double)", "#C8E6C9");
var s3 = CreateCell("1*", "#FFECB3");
Grid.SetColumn(s1, 0);
Grid.SetColumn(s2, 1);
Grid.SetColumn(s3, 2);
grid.Children.Add(s1);
grid.Children.Add(s2);
grid.Children.Add(s3);
return CreateDemoContainer(grid, "Star proportions: 1* | 2* | 1* = 25% | 50% | 25%");
}
private View CreateSpacingDemo()
{
var stack = new VerticalStackLayout { Spacing = 15 };
// No spacing
var noSpacing = new Grid
{
RowSpacing = 0,
ColumnSpacing = 0,
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
}
};
AddFourCells(noSpacing);
stack.Children.Add(new Label { Text = "No spacing (RowSpacing=0, ColumnSpacing=0)", FontSize = 12, TextColor = Colors.Gray });
stack.Children.Add(noSpacing);
// With spacing
var withSpacing = new Grid
{
RowSpacing = 10,
ColumnSpacing = 10,
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
}
};
AddFourCells(withSpacing);
stack.Children.Add(new Label { Text = "With spacing (RowSpacing=10, ColumnSpacing=10)", FontSize = 12, TextColor = Colors.Gray, Margin = new Thickness(0, 10, 0, 0) });
stack.Children.Add(withSpacing);
// Different row/column spacing
var mixedSpacing = new Grid
{
RowSpacing = 5,
ColumnSpacing = 20,
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
}
};
AddFourCells(mixedSpacing);
stack.Children.Add(new Label { Text = "Mixed spacing (RowSpacing=5, ColumnSpacing=20)", FontSize = 12, TextColor = Colors.Gray, Margin = new Thickness(0, 10, 0, 0) });
stack.Children.Add(mixedSpacing);
return stack;
}
private View CreateSpanDemo()
{
var grid = new Grid
{
RowSpacing = 5,
ColumnSpacing = 5,
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
}
};
// Spanning header
var header = CreateCell("ColumnSpan=3 (Header)", "#1976D2", Colors.White);
Grid.SetRow(header, 0);
Grid.SetColumn(header, 0);
Grid.SetColumnSpan(header, 3);
// Left sidebar spanning 2 rows
var sidebar = CreateCell("RowSpan=2\n(Sidebar)", "#388E3C", Colors.White);
Grid.SetRow(sidebar, 1);
Grid.SetColumn(sidebar, 0);
Grid.SetRowSpan(sidebar, 2);
// Content cells
var content1 = CreateCell("Content 1", "#E3F2FD");
Grid.SetRow(content1, 1);
Grid.SetColumn(content1, 1);
var content2 = CreateCell("Content 2", "#E8F5E9");
Grid.SetRow(content2, 1);
Grid.SetColumn(content2, 2);
var content3 = CreateCell("Content 3", "#FFF3E0");
Grid.SetRow(content3, 2);
Grid.SetColumn(content3, 1);
var content4 = CreateCell("Content 4", "#FCE4EC");
Grid.SetRow(content4, 2);
Grid.SetColumn(content4, 2);
grid.Children.Add(header);
grid.Children.Add(sidebar);
grid.Children.Add(content1);
grid.Children.Add(content2);
grid.Children.Add(content3);
grid.Children.Add(content4);
return CreateDemoContainer(grid, "Header spans 3 columns, Sidebar spans 2 rows");
}
private View CreateMixedSizingDemo()
{
var grid = new Grid
{
ColumnSpacing = 5,
ColumnDefinitions =
{
new ColumnDefinition { Width = new GridLength(60) }, // Fixed
new ColumnDefinition { Width = GridLength.Star }, // Fill
new ColumnDefinition { Width = GridLength.Auto }, // Auto
new ColumnDefinition { Width = new GridLength(60) } // Fixed
},
BackgroundColor = Color.FromArgb("#F5F5F5")
};
var c1 = CreateCell("60px", "#BBDEFB");
var c2 = CreateCell("Star (fills remaining)", "#C8E6C9");
var c3 = CreateCell("Auto", "#FFECB3");
var c4 = CreateCell("60px", "#F8BBD9");
Grid.SetColumn(c1, 0);
Grid.SetColumn(c2, 1);
Grid.SetColumn(c3, 2);
Grid.SetColumn(c4, 3);
grid.Children.Add(c1);
grid.Children.Add(c2);
grid.Children.Add(c3);
grid.Children.Add(c4);
return CreateDemoContainer(grid, "Mixed: 60px | Star | Auto | 60px");
}
private View CreateNestedGridDemo()
{
var outerGrid = new Grid
{
RowSpacing = 10,
ColumnSpacing = 10,
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
},
BackgroundColor = Color.FromArgb("#E0E0E0"),
Padding = new Thickness(10)
};
// Nested grid 1
var innerGrid1 = new Grid
{
RowSpacing = 2,
ColumnSpacing = 2,
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
}
};
var i1a = CreateCell("A", "#BBDEFB", null, 8);
var i1b = CreateCell("B", "#90CAF9", null, 8);
var i1c = CreateCell("C", "#64B5F6", null, 8);
var i1d = CreateCell("D", "#42A5F5", null, 8);
Grid.SetRow(i1a, 0); Grid.SetColumn(i1a, 0);
Grid.SetRow(i1b, 0); Grid.SetColumn(i1b, 1);
Grid.SetRow(i1c, 1); Grid.SetColumn(i1c, 0);
Grid.SetRow(i1d, 1); Grid.SetColumn(i1d, 1);
innerGrid1.Children.Add(i1a);
innerGrid1.Children.Add(i1b);
innerGrid1.Children.Add(i1c);
innerGrid1.Children.Add(i1d);
// Nested grid 2
var innerGrid2 = new Grid
{
RowSpacing = 2,
ColumnSpacing = 2,
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnDefinitions =
{
new ColumnDefinition { Width = GridLength.Star },
new ColumnDefinition { Width = GridLength.Star }
}
};
var i2a = CreateCell("1", "#C8E6C9", null, 8);
var i2b = CreateCell("2", "#A5D6A7", null, 8);
var i2c = CreateCell("3", "#81C784", null, 8);
var i2d = CreateCell("4", "#66BB6A", null, 8);
Grid.SetRow(i2a, 0); Grid.SetColumn(i2a, 0);
Grid.SetRow(i2b, 0); Grid.SetColumn(i2b, 1);
Grid.SetRow(i2c, 1); Grid.SetColumn(i2c, 0);
Grid.SetRow(i2d, 1); Grid.SetColumn(i2d, 1);
innerGrid2.Children.Add(i2a);
innerGrid2.Children.Add(i2b);
innerGrid2.Children.Add(i2c);
innerGrid2.Children.Add(i2d);
Grid.SetRow(innerGrid1, 0); Grid.SetColumn(innerGrid1, 0);
Grid.SetRow(innerGrid2, 0); Grid.SetColumn(innerGrid2, 1);
var label1 = new Label { Text = "Outer Grid Row 1", HorizontalOptions = LayoutOptions.Center };
var label2 = new Label { Text = "Spans both columns", HorizontalOptions = LayoutOptions.Center };
Grid.SetRow(label1, 1); Grid.SetColumn(label1, 0);
Grid.SetRow(label2, 1); Grid.SetColumn(label2, 1);
outerGrid.Children.Add(innerGrid1);
outerGrid.Children.Add(innerGrid2);
outerGrid.Children.Add(label1);
outerGrid.Children.Add(label2);
return CreateDemoContainer(outerGrid, "Outer grid contains two nested 2x2 grids");
}
private Border CreateCell(string text, string bgColor, Color? textColor = null, float fontSize = 12)
{
return new Border
{
BackgroundColor = Color.FromArgb(bgColor),
Padding = new Thickness(10, 8),
StrokeThickness = 0,
Content = new Label
{
Text = text,
FontSize = fontSize,
TextColor = textColor ?? Colors.Black,
HorizontalTextAlignment = TextAlignment.Center,
VerticalTextAlignment = TextAlignment.Center
}
};
}
private void AddFourCells(Grid grid)
{
var c1 = CreateCell("0,0", "#BBDEFB");
var c2 = CreateCell("0,1", "#C8E6C9");
var c3 = CreateCell("1,0", "#FFECB3");
var c4 = CreateCell("1,1", "#F8BBD9");
Grid.SetRow(c1, 0); Grid.SetColumn(c1, 0);
Grid.SetRow(c2, 0); Grid.SetColumn(c2, 1);
Grid.SetRow(c3, 1); Grid.SetColumn(c3, 0);
Grid.SetRow(c4, 1); Grid.SetColumn(c4, 1);
grid.Children.Add(c1);
grid.Children.Add(c2);
grid.Children.Add(c3);
grid.Children.Add(c4);
}
private View CreateDemoContainer(View content, string description)
{
return new VerticalStackLayout
{
Spacing = 5,
Children =
{
new Label { Text = description, FontSize = 12, TextColor = Colors.Gray },
content
}
};
}
}

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// HomePage - Welcome page for the demo
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
using Microsoft.Maui.Platform.Linux.Hosting;
namespace ShellDemo;
public class HomePage : ContentPage
{
public HomePage()
{
Title = "Home";
Content = new ScrollView
{
Orientation = ScrollOrientation.Both, // Enable horizontal scrolling when window is too narrow
Content = new VerticalStackLayout
{
Padding = new Thickness(30),
Spacing = 20,
Children =
{
new Label
{
Text = "OpenMaui Linux",
FontSize = 32,
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.FromArgb("#2196F3")
},
new Label
{
Text = "Controls Demo",
FontSize = 20,
HorizontalOptions = LayoutOptions.Center,
TextColor = Colors.Gray
},
new BoxView
{
HeightRequest = 2,
Color = Color.FromArgb("#E0E0E0"),
Margin = new Thickness(0, 10)
},
new Label
{
Text = "Welcome to the comprehensive controls demonstration for OpenMaui Linux. " +
"This app showcases all the major UI controls available in the framework.",
FontSize = 14,
LineBreakMode = LineBreakMode.WordWrap,
HorizontalTextAlignment = TextAlignment.Center
},
CreateFeatureSection(),
new Label
{
Text = "Use the flyout menu (swipe from left or tap the hamburger icon) to navigate between different control demos.",
FontSize = 12,
TextColor = Colors.Gray,
LineBreakMode = LineBreakMode.WordWrap,
HorizontalTextAlignment = TextAlignment.Center,
Margin = new Thickness(0, 20, 0, 0)
},
CreateQuickLinksSection(),
CreateNavigationDemoSection()
}
}
};
}
private View CreateFeatureSection()
{
var grid = new Grid
{
ColumnDefinitions =
{
new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) },
new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) }
},
RowDefinitions =
{
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto }
},
ColumnSpacing = 15,
RowSpacing = 15,
Margin = new Thickness(0, 20)
};
var features = new[]
{
("Buttons", "Various button styles and events"),
("Text Input", "Entry, Editor, SearchBar"),
("Selection", "CheckBox, Switch, Slider"),
("Pickers", "Picker, DatePicker, TimePicker"),
("Lists", "CollectionView with selection"),
("Progress", "ProgressBar, ActivityIndicator")
};
for (int i = 0; i < features.Length; i++)
{
var (title, desc) = features[i];
var card = CreateFeatureCard(title, desc);
Grid.SetRow(card, i / 2);
Grid.SetColumn(card, i % 2);
grid.Children.Add(card);
}
return grid;
}
private Frame CreateFeatureCard(string title, string description)
{
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Colors.White,
HasShadow = true,
Content = new VerticalStackLayout
{
Spacing = 5,
Children =
{
new Label
{
Text = title,
FontSize = 14,
FontAttributes = FontAttributes.Bold,
TextColor = Color.FromArgb("#2196F3")
},
new Label
{
Text = description,
FontSize = 11,
TextColor = Colors.Gray,
LineBreakMode = LineBreakMode.WordWrap
}
}
}
};
}
private View CreateQuickLinksSection()
{
var layout = new VerticalStackLayout
{
Spacing = 10,
Margin = new Thickness(0, 20, 0, 0)
};
layout.Children.Add(new Label
{
Text = "Quick Actions",
FontSize = 16,
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.Center
});
var buttonRow = new HorizontalStackLayout
{
Spacing = 10,
HorizontalOptions = LayoutOptions.Center
};
var buttonsBtn = new Button
{
Text = "Try Buttons",
BackgroundColor = Color.FromArgb("#2196F3"),
TextColor = Colors.White
};
buttonsBtn.Clicked += (s, e) => LinuxViewRenderer.NavigateToRoute("Buttons");
var listsBtn = new Button
{
Text = "Try Lists",
BackgroundColor = Color.FromArgb("#4CAF50"),
TextColor = Colors.White
};
listsBtn.Clicked += (s, e) => LinuxViewRenderer.NavigateToRoute("Lists");
buttonRow.Children.Add(buttonsBtn);
buttonRow.Children.Add(listsBtn);
layout.Children.Add(buttonRow);
return layout;
}
private View CreateNavigationDemoSection()
{
var frame = new Frame
{
CornerRadius = 8,
Padding = new Thickness(20),
BackgroundColor = Color.FromArgb("#F3E5F5"),
Margin = new Thickness(0, 20, 0, 0),
Content = new VerticalStackLayout
{
Spacing = 15,
Children =
{
new Label
{
Text = "Navigation Stack Demo",
FontSize = 18,
FontAttributes = FontAttributes.Bold,
TextColor = Color.FromArgb("#9C27B0"),
HorizontalOptions = LayoutOptions.Center
},
new Label
{
Text = "Demonstrate push/pop navigation using Shell.GoToAsync()",
FontSize = 12,
TextColor = Colors.Gray,
HorizontalTextAlignment = TextAlignment.Center
},
CreatePushButton("Push Detail Page", "detail"),
new Label
{
Text = "Click the button to push a new page onto the navigation stack. " +
"Use the back button or 'Go Back' to pop it off.",
FontSize = 11,
TextColor = Colors.Gray,
HorizontalTextAlignment = TextAlignment.Center,
LineBreakMode = LineBreakMode.WordWrap
}
}
}
};
return frame;
}
private Button CreatePushButton(string text, string route)
{
var btn = new Button
{
Text = text,
BackgroundColor = Color.FromArgb("#9C27B0"),
TextColor = Colors.White,
HorizontalOptions = LayoutOptions.Center,
Padding = new Thickness(30, 10)
};
btn.Clicked += (s, e) =>
{
Console.WriteLine($"[HomePage] Push button clicked, navigating to {route}");
// Use LinuxViewRenderer.PushPage for Skia-based navigation
var success = LinuxViewRenderer.PushPage(new DetailPage());
Console.WriteLine($"[HomePage] PushPage result: {success}");
};
return btn;
}
}

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// ListsPage - CollectionView and ListView Demo
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class ListsPage : ContentPage
{
private readonly Label _eventLog;
private int _eventCount = 0;
public ListsPage()
{
Title = "Lists";
_eventLog = new Label
{
Text = "Events will appear here...",
FontSize = 11,
TextColor = Colors.Gray,
LineBreakMode = LineBreakMode.WordWrap
};
Content = new Grid
{
RowDefinitions =
{
new RowDefinition { Height = new GridLength(1, GridUnitType.Star) },
new RowDefinition { Height = new GridLength(120) }
},
Children =
{
CreateMainContent(),
CreateEventLogPanel()
}
};
Grid.SetRow((View)((Grid)Content).Children[0], 0);
Grid.SetRow((View)((Grid)Content).Children[1], 1);
}
private View CreateMainContent()
{
return new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 20,
Children =
{
new Label { Text = "List Controls", FontSize = 24, FontAttributes = FontAttributes.Bold },
CreateSection("CollectionView - Fruits", CreateFruitsCollectionView()),
CreateSection("CollectionView - Colors", CreateColorsCollectionView()),
CreateSection("CollectionView - Contacts", CreateContactsCollectionView())
}
}
};
}
private View CreateFruitsCollectionView()
{
var layout = new VerticalStackLayout { Spacing = 10 };
var fruits = new List<string>
{
"Apple", "Banana", "Cherry", "Date", "Elderberry",
"Fig", "Grape", "Honeydew", "Kiwi", "Lemon",
"Mango", "Nectarine", "Orange", "Papaya", "Quince"
};
var selectedLabel = new Label { Text = "Tap a fruit to select", TextColor = Colors.Gray };
var collectionView = new CollectionView
{
ItemsSource = fruits,
HeightRequest = 200,
SelectionMode = SelectionMode.Single,
BackgroundColor = Color.FromArgb("#FAFAFA")
};
collectionView.SelectionChanged += (s, e) =>
{
if (e.CurrentSelection.Count > 0)
{
var item = e.CurrentSelection[0]?.ToString();
selectedLabel.Text = $"Selected: {item}";
LogEvent($"Fruit selected: {item}");
}
};
layout.Children.Add(collectionView);
layout.Children.Add(selectedLabel);
return layout;
}
private View CreateColorsCollectionView()
{
var layout = new VerticalStackLayout { Spacing = 10 };
var colors = new List<ColorItem>
{
new("Red", "#F44336"),
new("Pink", "#E91E63"),
new("Purple", "#9C27B0"),
new("Deep Purple", "#673AB7"),
new("Indigo", "#3F51B5"),
new("Blue", "#2196F3"),
new("Cyan", "#00BCD4"),
new("Teal", "#009688"),
new("Green", "#4CAF50"),
new("Light Green", "#8BC34A"),
new("Lime", "#CDDC39"),
new("Yellow", "#FFEB3B"),
new("Amber", "#FFC107"),
new("Orange", "#FF9800"),
new("Deep Orange", "#FF5722")
};
var collectionView = new CollectionView
{
ItemsSource = colors,
HeightRequest = 180,
SelectionMode = SelectionMode.Single,
BackgroundColor = Colors.White
};
collectionView.SelectionChanged += (s, e) =>
{
if (e.CurrentSelection.Count > 0 && e.CurrentSelection[0] is ColorItem item)
{
LogEvent($"Color selected: {item.Name} ({item.Hex})");
}
};
layout.Children.Add(collectionView);
layout.Children.Add(new Label { Text = "Scroll to see all colors", FontSize = 11, TextColor = Colors.Gray });
return layout;
}
private View CreateContactsCollectionView()
{
var layout = new VerticalStackLayout { Spacing = 10 };
var contacts = new List<ContactItem>
{
new("Alice Johnson", "alice@example.com", "Engineering"),
new("Bob Smith", "bob@example.com", "Marketing"),
new("Carol Williams", "carol@example.com", "Design"),
new("David Brown", "david@example.com", "Sales"),
new("Eva Martinez", "eva@example.com", "Engineering"),
new("Frank Lee", "frank@example.com", "Support"),
new("Grace Kim", "grace@example.com", "HR"),
new("Henry Wilson", "henry@example.com", "Finance")
};
var collectionView = new CollectionView
{
ItemsSource = contacts,
HeightRequest = 200,
SelectionMode = SelectionMode.Single,
BackgroundColor = Colors.White
};
collectionView.SelectionChanged += (s, e) =>
{
if (e.CurrentSelection.Count > 0 && e.CurrentSelection[0] is ContactItem contact)
{
LogEvent($"Contact: {contact.Name} - {contact.Department}");
}
};
layout.Children.Add(collectionView);
// Action buttons
var buttonRow = new HorizontalStackLayout { Spacing = 10 };
var addBtn = new Button { Text = "Add Contact", BackgroundColor = Colors.Green, TextColor = Colors.White };
addBtn.Clicked += (s, e) => LogEvent("Add contact clicked");
var deleteBtn = new Button { Text = "Delete Selected", BackgroundColor = Colors.Red, TextColor = Colors.White };
deleteBtn.Clicked += (s, e) => LogEvent("Delete contact clicked");
buttonRow.Children.Add(addBtn);
buttonRow.Children.Add(deleteBtn);
layout.Children.Add(buttonRow);
return layout;
}
private Frame CreateSection(string title, View content)
{
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Colors.White,
Content = new VerticalStackLayout
{
Spacing = 10,
Children =
{
new Label { Text = title, FontSize = 16, FontAttributes = FontAttributes.Bold },
content
}
}
};
}
private View CreateEventLogPanel()
{
return new Frame
{
BackgroundColor = Color.FromArgb("#F5F5F5"),
Padding = new Thickness(10),
CornerRadius = 0,
Content = new VerticalStackLayout
{
Children =
{
new Label { Text = "Event Log:", FontSize = 12, FontAttributes = FontAttributes.Bold },
new ScrollView
{
HeightRequest = 80,
Content = _eventLog
}
}
}
};
}
private void LogEvent(string message)
{
_eventCount++;
var timestamp = DateTime.Now.ToString("HH:mm:ss");
_eventLog.Text = $"[{timestamp}] {_eventCount}. {message}\n{_eventLog.Text}";
}
}
public record ColorItem(string Name, string Hex)
{
public override string ToString() => Name;
}
public record ContactItem(string Name, string Email, string Department)
{
public override string ToString() => $"{Name} ({Department})";
}

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// PickersPage - Picker, DatePicker, TimePicker Demo
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class PickersPage : ContentPage
{
private readonly Label _eventLog;
private int _eventCount = 0;
public PickersPage()
{
Title = "Pickers";
_eventLog = new Label
{
Text = "Events will appear here...",
FontSize = 11,
TextColor = Colors.Gray,
LineBreakMode = LineBreakMode.WordWrap
};
Content = new Grid
{
RowDefinitions =
{
new RowDefinition { Height = new GridLength(1, GridUnitType.Star) },
new RowDefinition { Height = new GridLength(120) }
},
Children =
{
CreateMainContent(),
CreateEventLogPanel()
}
};
Grid.SetRow((View)((Grid)Content).Children[0], 0);
Grid.SetRow((View)((Grid)Content).Children[1], 1);
}
private View CreateMainContent()
{
return new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 20,
Children =
{
new Label { Text = "Picker Controls", FontSize = 24, FontAttributes = FontAttributes.Bold },
CreateSection("Picker", CreatePickerDemo()),
CreateSection("DatePicker", CreateDatePickerDemo()),
CreateSection("TimePicker", CreateTimePickerDemo())
}
}
};
}
private View CreatePickerDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Basic picker
var selectedLabel = new Label { Text = "Selected: (none)", TextColor = Colors.Gray };
var picker1 = new Picker { Title = "Select a fruit" };
picker1.Items.Add("Apple");
picker1.Items.Add("Banana");
picker1.Items.Add("Cherry");
picker1.Items.Add("Date");
picker1.Items.Add("Elderberry");
picker1.Items.Add("Fig");
picker1.Items.Add("Grape");
picker1.SelectedIndexChanged += (s, e) =>
{
if (picker1.SelectedIndex >= 0)
{
var item = picker1.Items[picker1.SelectedIndex];
selectedLabel.Text = $"Selected: {item}";
LogEvent($"Fruit selected: {item}");
}
};
layout.Children.Add(picker1);
layout.Children.Add(selectedLabel);
// Picker with default selection
layout.Children.Add(new Label { Text = "With Default Selection:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var picker2 = new Picker { Title = "Select a color" };
picker2.Items.Add("Red");
picker2.Items.Add("Green");
picker2.Items.Add("Blue");
picker2.Items.Add("Yellow");
picker2.Items.Add("Purple");
picker2.SelectedIndex = 2; // Blue
picker2.SelectedIndexChanged += (s, e) =>
{
if (picker2.SelectedIndex >= 0)
LogEvent($"Color selected: {picker2.Items[picker2.SelectedIndex]}");
};
layout.Children.Add(picker2);
// Styled picker
layout.Children.Add(new Label { Text = "Styled Picker:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var picker3 = new Picker
{
Title = "Select size",
TextColor = Colors.DarkBlue,
TitleColor = Colors.Gray
};
picker3.Items.Add("Small");
picker3.Items.Add("Medium");
picker3.Items.Add("Large");
picker3.Items.Add("Extra Large");
picker3.SelectedIndexChanged += (s, e) =>
{
if (picker3.SelectedIndex >= 0)
LogEvent($"Size selected: {picker3.Items[picker3.SelectedIndex]}");
};
layout.Children.Add(picker3);
return layout;
}
private View CreateDatePickerDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Basic date picker
var dateLabel = new Label { Text = $"Selected: {DateTime.Today:d}" };
var datePicker1 = new DatePicker { Date = DateTime.Today };
datePicker1.DateSelected += (s, e) =>
{
dateLabel.Text = $"Selected: {e.NewDate:d}";
LogEvent($"Date selected: {e.NewDate:d}");
};
layout.Children.Add(datePicker1);
layout.Children.Add(dateLabel);
// Date picker with range
layout.Children.Add(new Label { Text = "With Date Range (this month only):", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var startOfMonth = new DateTime(DateTime.Today.Year, DateTime.Today.Month, 1);
var endOfMonth = startOfMonth.AddMonths(1).AddDays(-1);
var datePicker2 = new DatePicker
{
MinimumDate = startOfMonth,
MaximumDate = endOfMonth,
Date = DateTime.Today
};
datePicker2.DateSelected += (s, e) => LogEvent($"Date (limited): {e.NewDate:d}");
layout.Children.Add(datePicker2);
// Styled date picker
layout.Children.Add(new Label { Text = "Styled DatePicker:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var datePicker3 = new DatePicker
{
Date = DateTime.Today.AddDays(7),
TextColor = Colors.DarkGreen
};
datePicker3.DateSelected += (s, e) => LogEvent($"Styled date: {e.NewDate:d}");
layout.Children.Add(datePicker3);
return layout;
}
private View CreateTimePickerDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Basic time picker
var timeLabel = new Label { Text = $"Selected: {DateTime.Now:t}" };
var timePicker1 = new TimePicker { Time = DateTime.Now.TimeOfDay };
timePicker1.PropertyChanged += (s, e) =>
{
if (e.PropertyName == nameof(TimePicker.Time))
{
var time = timePicker1.Time;
timeLabel.Text = $"Selected: {time:hh\\:mm}";
LogEvent($"Time selected: {time:hh\\:mm}");
}
};
layout.Children.Add(timePicker1);
layout.Children.Add(timeLabel);
// Styled time picker
layout.Children.Add(new Label { Text = "Styled TimePicker:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var timePicker2 = new TimePicker
{
Time = new TimeSpan(14, 30, 0),
TextColor = Colors.DarkBlue
};
timePicker2.PropertyChanged += (s, e) =>
{
if (e.PropertyName == nameof(TimePicker.Time))
LogEvent($"Styled time: {timePicker2.Time:hh\\:mm}");
};
layout.Children.Add(timePicker2);
// Morning alarm example
layout.Children.Add(new Label { Text = "Alarm Time:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var alarmRow = new HorizontalStackLayout { Spacing = 10 };
var alarmPicker = new TimePicker { Time = new TimeSpan(7, 0, 0) };
var alarmBtn = new Button { Text = "Set Alarm", BackgroundColor = Colors.Orange, TextColor = Colors.White };
alarmBtn.Clicked += (s, e) => LogEvent($"Alarm set for {alarmPicker.Time:hh\\:mm}");
alarmRow.Children.Add(alarmPicker);
alarmRow.Children.Add(alarmBtn);
layout.Children.Add(alarmRow);
return layout;
}
private Frame CreateSection(string title, View content)
{
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Colors.White,
Content = new VerticalStackLayout
{
Spacing = 10,
Children =
{
new Label { Text = title, FontSize = 16, FontAttributes = FontAttributes.Bold },
content
}
}
};
}
private View CreateEventLogPanel()
{
return new Frame
{
BackgroundColor = Color.FromArgb("#F5F5F5"),
Padding = new Thickness(10),
CornerRadius = 0,
Content = new VerticalStackLayout
{
Children =
{
new Label { Text = "Event Log:", FontSize = 12, FontAttributes = FontAttributes.Bold },
new ScrollView
{
HeightRequest = 80,
Content = _eventLog
}
}
}
};
}
private void LogEvent(string message)
{
_eventCount++;
var timestamp = DateTime.Now.ToString("HH:mm:ss");
_eventLog.Text = $"[{timestamp}] {_eventCount}. {message}\n{_eventLog.Text}";
}
}

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// ProgressPage - ProgressBar and ActivityIndicator Demo
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class ProgressPage : ContentPage
{
private readonly Label _eventLog;
private int _eventCount = 0;
private ProgressBar? _animatedProgress;
private bool _isAnimating = false;
public ProgressPage()
{
Title = "Progress";
_eventLog = new Label
{
Text = "Events will appear here...",
FontSize = 11,
TextColor = Colors.Gray,
LineBreakMode = LineBreakMode.WordWrap
};
Content = new Grid
{
RowDefinitions =
{
new RowDefinition { Height = new GridLength(1, GridUnitType.Star) },
new RowDefinition { Height = new GridLength(120) }
},
Children =
{
CreateMainContent(),
CreateEventLogPanel()
}
};
Grid.SetRow((View)((Grid)Content).Children[0], 0);
Grid.SetRow((View)((Grid)Content).Children[1], 1);
}
private View CreateMainContent()
{
return new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 20,
Children =
{
new Label { Text = "Progress Indicators", FontSize = 24, FontAttributes = FontAttributes.Bold },
CreateSection("ProgressBar", CreateProgressBarDemo()),
CreateSection("ActivityIndicator", CreateActivityIndicatorDemo()),
CreateSection("Interactive Demo", CreateInteractiveDemo())
}
}
};
}
private View CreateProgressBarDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Various progress values
var values = new[] { 0.0, 0.25, 0.5, 0.75, 1.0 };
foreach (var value in values)
{
var row = new HorizontalStackLayout { Spacing = 10 };
var progress = new ProgressBar { Progress = value, WidthRequest = 200 };
var label = new Label { Text = $"{value * 100:0}%", VerticalOptions = LayoutOptions.Center, WidthRequest = 50 };
row.Children.Add(progress);
row.Children.Add(label);
layout.Children.Add(row);
}
// Colored progress bars
layout.Children.Add(new Label { Text = "Colored Progress Bars:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var colors = new[] { Colors.Red, Colors.Green, Colors.Blue, Colors.Orange, Colors.Purple };
foreach (var color in colors)
{
var progress = new ProgressBar { Progress = 0.7, ProgressColor = color };
layout.Children.Add(progress);
}
return layout;
}
private View CreateActivityIndicatorDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Running indicator
var runningRow = new HorizontalStackLayout { Spacing = 15 };
var runningIndicator = new ActivityIndicator { IsRunning = true };
runningRow.Children.Add(runningIndicator);
runningRow.Children.Add(new Label { Text = "Loading...", VerticalOptions = LayoutOptions.Center });
layout.Children.Add(runningRow);
// Toggle indicator
var toggleRow = new HorizontalStackLayout { Spacing = 15 };
var toggleIndicator = new ActivityIndicator { IsRunning = false };
var toggleBtn = new Button { Text = "Start/Stop" };
toggleBtn.Clicked += (s, e) =>
{
toggleIndicator.IsRunning = !toggleIndicator.IsRunning;
LogEvent($"ActivityIndicator: {(toggleIndicator.IsRunning ? "Started" : "Stopped")}");
};
toggleRow.Children.Add(toggleIndicator);
toggleRow.Children.Add(toggleBtn);
layout.Children.Add(toggleRow);
// Colored indicators
layout.Children.Add(new Label { Text = "Colored Indicators:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var colorRow = new HorizontalStackLayout { Spacing = 20 };
var indicatorColors = new[] { Colors.Red, Colors.Green, Colors.Blue, Colors.Orange };
foreach (var color in indicatorColors)
{
var indicator = new ActivityIndicator { IsRunning = true, Color = color };
colorRow.Children.Add(indicator);
}
layout.Children.Add(colorRow);
return layout;
}
private View CreateInteractiveDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Slider-controlled progress
var progressLabel = new Label { Text = "Progress: 50%" };
_animatedProgress = new ProgressBar { Progress = 0.5 };
var slider = new Slider { Minimum = 0, Maximum = 100, Value = 50 };
slider.ValueChanged += (s, e) =>
{
var value = e.NewValue / 100.0;
_animatedProgress.Progress = value;
progressLabel.Text = $"Progress: {e.NewValue:0}%";
};
layout.Children.Add(_animatedProgress);
layout.Children.Add(slider);
layout.Children.Add(progressLabel);
// Animated progress buttons
var buttonRow = new HorizontalStackLayout { Spacing = 10, Margin = new Thickness(0, 10, 0, 0) };
var resetBtn = new Button { Text = "Reset", BackgroundColor = Colors.Gray, TextColor = Colors.White };
resetBtn.Clicked += async (s, e) =>
{
_animatedProgress.Progress = 0;
slider.Value = 0;
LogEvent("Progress reset to 0%");
};
var animateBtn = new Button { Text = "Animate to 100%", BackgroundColor = Colors.Blue, TextColor = Colors.White };
animateBtn.Clicked += async (s, e) =>
{
if (_isAnimating) return;
_isAnimating = true;
LogEvent("Animation started");
for (int i = (int)(slider.Value); i <= 100; i += 5)
{
_animatedProgress.Progress = i / 100.0;
slider.Value = i;
await Task.Delay(100);
}
_isAnimating = false;
LogEvent("Animation completed");
};
var simulateBtn = new Button { Text = "Simulate Download", BackgroundColor = Colors.Green, TextColor = Colors.White };
simulateBtn.Clicked += async (s, e) =>
{
if (_isAnimating) return;
_isAnimating = true;
LogEvent("Download simulation started");
_animatedProgress.Progress = 0;
slider.Value = 0;
var random = new Random();
double progress = 0;
while (progress < 1.0)
{
progress += random.NextDouble() * 0.1;
if (progress > 1.0) progress = 1.0;
_animatedProgress.Progress = progress;
slider.Value = progress * 100;
await Task.Delay(200 + random.Next(300));
}
_isAnimating = false;
LogEvent("Download simulation completed");
};
buttonRow.Children.Add(resetBtn);
buttonRow.Children.Add(animateBtn);
buttonRow.Children.Add(simulateBtn);
layout.Children.Add(buttonRow);
return layout;
}
private Frame CreateSection(string title, View content)
{
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Colors.White,
Content = new VerticalStackLayout
{
Spacing = 10,
Children =
{
new Label { Text = title, FontSize = 16, FontAttributes = FontAttributes.Bold },
content
}
}
};
}
private View CreateEventLogPanel()
{
return new Frame
{
BackgroundColor = Color.FromArgb("#F5F5F5"),
Padding = new Thickness(10),
CornerRadius = 0,
Content = new VerticalStackLayout
{
Children =
{
new Label { Text = "Event Log:", FontSize = 12, FontAttributes = FontAttributes.Bold },
new ScrollView
{
HeightRequest = 80,
Content = _eventLog
}
}
}
};
}
private void LogEvent(string message)
{
_eventCount++;
var timestamp = DateTime.Now.ToString("HH:mm:ss");
_eventLog.Text = $"[{timestamp}] {_eventCount}. {message}\n{_eventLog.Text}";
}
}

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// SelectionPage - CheckBox, Switch, Slider Demo
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class SelectionPage : ContentPage
{
private readonly Label _eventLog;
private int _eventCount = 0;
public SelectionPage()
{
Title = "Selection Controls";
_eventLog = new Label
{
Text = "Events will appear here...",
FontSize = 11,
TextColor = Colors.Gray,
LineBreakMode = LineBreakMode.WordWrap
};
Content = new Grid
{
RowDefinitions =
{
new RowDefinition { Height = new GridLength(1, GridUnitType.Star) },
new RowDefinition { Height = new GridLength(120) }
},
Children =
{
CreateMainContent(),
CreateEventLogPanel()
}
};
Grid.SetRow((View)((Grid)Content).Children[0], 0);
Grid.SetRow((View)((Grid)Content).Children[1], 1);
}
private View CreateMainContent()
{
return new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 20,
Children =
{
new Label { Text = "Selection Controls", FontSize = 24, FontAttributes = FontAttributes.Bold },
CreateSection("CheckBox", CreateCheckBoxDemo()),
CreateSection("Switch", CreateSwitchDemo()),
CreateSection("Slider", CreateSliderDemo())
}
}
};
}
private View CreateCheckBoxDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Basic checkboxes
var basicRow = new HorizontalStackLayout { Spacing = 20 };
var cb1 = new CheckBox { IsChecked = false };
cb1.CheckedChanged += (s, e) => LogEvent($"Checkbox 1: {(e.Value ? "Checked" : "Unchecked")}");
basicRow.Children.Add(cb1);
basicRow.Children.Add(new Label { Text = "Option 1", VerticalOptions = LayoutOptions.Center });
var cb2 = new CheckBox { IsChecked = true };
cb2.CheckedChanged += (s, e) => LogEvent($"Checkbox 2: {(e.Value ? "Checked" : "Unchecked")}");
basicRow.Children.Add(cb2);
basicRow.Children.Add(new Label { Text = "Option 2 (default checked)", VerticalOptions = LayoutOptions.Center });
layout.Children.Add(basicRow);
// Colored checkboxes
var colorRow = new HorizontalStackLayout { Spacing = 20 };
var colors = new[] { Colors.Red, Colors.Green, Colors.Blue, Colors.Purple };
foreach (var color in colors)
{
var cb = new CheckBox { Color = color, IsChecked = true };
cb.CheckedChanged += (s, e) => LogEvent($"{color} checkbox: {(e.Value ? "Checked" : "Unchecked")}");
colorRow.Children.Add(cb);
}
layout.Children.Add(new Label { Text = "Colored Checkboxes:", FontSize = 12 });
layout.Children.Add(colorRow);
// Disabled checkbox
var disabledRow = new HorizontalStackLayout { Spacing = 10 };
var disabledCb = new CheckBox { IsChecked = true, IsEnabled = false };
disabledRow.Children.Add(disabledCb);
disabledRow.Children.Add(new Label { Text = "Disabled (checked)", VerticalOptions = LayoutOptions.Center, TextColor = Colors.Gray });
layout.Children.Add(disabledRow);
return layout;
}
private View CreateSwitchDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Basic switch
var basicRow = new HorizontalStackLayout { Spacing = 15 };
var statusLabel = new Label { Text = "Off", VerticalOptions = LayoutOptions.Center, WidthRequest = 50 };
var sw1 = new Switch { IsToggled = false };
sw1.Toggled += (s, e) =>
{
statusLabel.Text = e.Value ? "On" : "Off";
LogEvent($"Switch toggled: {(e.Value ? "ON" : "OFF")}");
};
basicRow.Children.Add(sw1);
basicRow.Children.Add(statusLabel);
layout.Children.Add(basicRow);
// Colored switches
var colorRow = new HorizontalStackLayout { Spacing = 20 };
var switchColors = new[] { Colors.Green, Colors.Orange, Colors.Purple };
foreach (var color in switchColors)
{
var sw = new Switch { IsToggled = true, OnColor = color };
sw.Toggled += (s, e) => LogEvent($"{color} switch: {(e.Value ? "ON" : "OFF")}");
colorRow.Children.Add(sw);
}
layout.Children.Add(new Label { Text = "Colored Switches:", FontSize = 12 });
layout.Children.Add(colorRow);
// Disabled switch
var disabledRow = new HorizontalStackLayout { Spacing = 10 };
var disabledSw = new Switch { IsToggled = true, IsEnabled = false };
disabledRow.Children.Add(disabledSw);
disabledRow.Children.Add(new Label { Text = "Disabled (on)", VerticalOptions = LayoutOptions.Center, TextColor = Colors.Gray });
layout.Children.Add(disabledRow);
return layout;
}
private View CreateSliderDemo()
{
var layout = new VerticalStackLayout { Spacing = 15 };
// Basic slider
var valueLabel = new Label { Text = "Value: 50" };
var slider1 = new Slider { Minimum = 0, Maximum = 100, Value = 50 };
slider1.ValueChanged += (s, e) =>
{
valueLabel.Text = $"Value: {(int)e.NewValue}";
LogEvent($"Slider value: {(int)e.NewValue}");
};
layout.Children.Add(slider1);
layout.Children.Add(valueLabel);
// Slider with custom range
layout.Children.Add(new Label { Text = "Temperature (0-40°C):", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var tempLabel = new Label { Text = "20°C" };
var tempSlider = new Slider { Minimum = 0, Maximum = 40, Value = 20 };
tempSlider.ValueChanged += (s, e) =>
{
tempLabel.Text = $"{(int)e.NewValue}°C";
LogEvent($"Temperature: {(int)e.NewValue}°C");
};
layout.Children.Add(tempSlider);
layout.Children.Add(tempLabel);
// Colored slider
layout.Children.Add(new Label { Text = "Colored Slider:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var colorSlider = new Slider
{
Minimum = 0,
Maximum = 100,
Value = 75,
MinimumTrackColor = Colors.Green,
MaximumTrackColor = Colors.LightGray,
ThumbColor = Colors.DarkGreen
};
colorSlider.ValueChanged += (s, e) => LogEvent($"Colored slider: {(int)e.NewValue}");
layout.Children.Add(colorSlider);
// Disabled slider
layout.Children.Add(new Label { Text = "Disabled Slider:", FontSize = 12, Margin = new Thickness(0, 10, 0, 0) });
var disabledSlider = new Slider { Minimum = 0, Maximum = 100, Value = 30, IsEnabled = false };
layout.Children.Add(disabledSlider);
return layout;
}
private Frame CreateSection(string title, View content)
{
return new Frame
{
CornerRadius = 8,
Padding = new Thickness(15),
BackgroundColor = Colors.White,
Content = new VerticalStackLayout
{
Spacing = 10,
Children =
{
new Label { Text = title, FontSize = 16, FontAttributes = FontAttributes.Bold },
content
}
}
};
}
private View CreateEventLogPanel()
{
return new Frame
{
BackgroundColor = Color.FromArgb("#F5F5F5"),
Padding = new Thickness(10),
CornerRadius = 0,
Content = new VerticalStackLayout
{
Children =
{
new Label { Text = "Event Log:", FontSize = 12, FontAttributes = FontAttributes.Bold },
new ScrollView
{
HeightRequest = 80,
Content = _eventLog
}
}
}
};
}
private void LogEvent(string message)
{
_eventCount++;
var timestamp = DateTime.Now.ToString("HH:mm:ss");
_eventLog.Text = $"[{timestamp}] {_eventCount}. {message}\n{_eventLog.Text}";
}
}

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// TextInputPage - Demonstrates text input controls
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace ShellDemo;
public class TextInputPage : ContentPage
{
private Label _entryOutput;
private Label _searchOutput;
private Label _editorOutput;
public TextInputPage()
{
Title = "Text Input";
_entryOutput = new Label { TextColor = Colors.Gray, FontSize = 12 };
_searchOutput = new Label { TextColor = Colors.Gray, FontSize = 12 };
_editorOutput = new Label { TextColor = Colors.Gray, FontSize = 12 };
Content = new ScrollView
{
Content = new VerticalStackLayout
{
Padding = new Thickness(20),
Spacing = 15,
Children =
{
new Label
{
Text = "Text Input Controls",
FontSize = 24,
FontAttributes = FontAttributes.Bold
},
new Label
{
Text = "Click on any field and start typing. All keyboard input is handled by the framework.",
FontSize = 14,
TextColor = Colors.Gray
},
// Entry Section
new BoxView { HeightRequest = 1, Color = Colors.LightGray },
new Label { Text = "Entry (Single Line)", FontSize = 18, FontAttributes = FontAttributes.Bold },
CreateEntry("Enter your name...", e => _entryOutput.Text = $"You typed: {e.Text}"),
_entryOutput,
CreateEntry("Enter your email...", null, Keyboard.Email),
new Label { Text = "Email keyboard type", FontSize = 12, TextColor = Colors.Gray },
CreatePasswordEntry("Enter password..."),
new Label { Text = "Password field (text hidden)", FontSize = 12, TextColor = Colors.Gray },
// SearchBar Section
new BoxView { HeightRequest = 1, Color = Colors.LightGray },
new Label { Text = "SearchBar", FontSize = 18, FontAttributes = FontAttributes.Bold },
CreateSearchBar(),
_searchOutput,
// Editor Section
new BoxView { HeightRequest = 1, Color = Colors.LightGray },
new Label { Text = "Editor (Multi-line)", FontSize = 18, FontAttributes = FontAttributes.Bold },
CreateEditor(),
_editorOutput,
// Instructions
new BoxView { HeightRequest = 1, Color = Colors.LightGray },
new Frame
{
BackgroundColor = Color.FromArgb("#E3F2FD"),
CornerRadius = 8,
Padding = new Thickness(15),
Content = new VerticalStackLayout
{
Spacing = 5,
Children =
{
new Label
{
Text = "Keyboard Shortcuts",
FontAttributes = FontAttributes.Bold
},
new Label { Text = "Ctrl+A: Select all" },
new Label { Text = "Ctrl+C: Copy" },
new Label { Text = "Ctrl+V: Paste" },
new Label { Text = "Ctrl+X: Cut" },
new Label { Text = "Home/End: Move to start/end" },
new Label { Text = "Shift+Arrow: Select text" }
}
}
}
}
}
};
}
private Entry CreateEntry(string placeholder, Action<Entry>? onTextChanged, Keyboard? keyboard = null)
{
var entry = new Entry
{
Placeholder = placeholder,
FontSize = 14
};
if (keyboard != null)
{
entry.Keyboard = keyboard;
}
if (onTextChanged != null)
{
entry.TextChanged += (s, e) => onTextChanged(entry);
}
return entry;
}
private Entry CreatePasswordEntry(string placeholder)
{
return new Entry
{
Placeholder = placeholder,
FontSize = 14,
IsPassword = true
};
}
private SearchBar CreateSearchBar()
{
var searchBar = new SearchBar
{
Placeholder = "Search for items..."
};
searchBar.TextChanged += (s, e) =>
{
_searchOutput.Text = $"Searching: {e.NewTextValue}";
};
searchBar.SearchButtonPressed += (s, e) =>
{
_searchOutput.Text = $"Search submitted: {searchBar.Text}";
};
return searchBar;
}
private Editor CreateEditor()
{
var editor = new Editor
{
Placeholder = "Enter multiple lines of text here...\nPress Enter to create new lines.",
HeightRequest = 120,
FontSize = 14
};
editor.TextChanged += (s, e) =>
{
var lineCount = string.IsNullOrEmpty(e.NewTextValue) ? 0 : e.NewTextValue.Split('\n').Length;
_editorOutput.Text = $"Lines: {lineCount}, Characters: {e.NewTextValue?.Length ?? 0}";
};
return editor;
}
}

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// Platforms/Linux/Program.cs - Linux platform entry point
// Same pattern as Android's MainActivity or iOS's AppDelegate
using Microsoft.Maui.Platform.Linux;
using Microsoft.Maui.Platform.Linux.Hosting;
namespace ShellDemo;
class Program
{
static void Main(string[] args)
{
// Create the shared MAUI app
var app = MauiProgram.CreateMauiApp();
// Run on Linux platform
LinuxApplication.Run(app, args);
}
}

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# ShellDemo Sample
A comprehensive control showcase application demonstrating all OpenMaui Linux controls with Shell navigation and flyout menu.
## Features
- **Shell Navigation** - Flyout menu with multiple pages
- **Route-Based Navigation** - Push navigation with registered routes
- **All Core Controls** - Button, Entry, Editor, CheckBox, Switch, Slider, Picker, etc.
- **CollectionView** - Lists with selection and data binding
- **Progress Indicators** - ProgressBar and ActivityIndicator with animations
- **Grid Layouts** - Complex multi-column/row layouts
- **Event Logging** - Real-time event feedback panel
## Pages
| Page | Controls Demonstrated |
|------|----------------------|
| **Home** | Welcome screen, navigation overview |
| **Buttons** | Button styles, colors, states, click/press/release events |
| **Text Input** | Entry, Editor, SearchBar, password fields, keyboard types |
| **Selection** | CheckBox, Switch, Slider with colors and states |
| **Pickers** | Picker, DatePicker, TimePicker with styling |
| **Lists** | CollectionView with selection, custom items |
| **Progress** | ProgressBar, ActivityIndicator, animated demos |
| **Grids** | Grid layouts with row/column definitions |
| **About** | App information |
## Architecture
```
ShellDemo/
├── App.cs # AppShell definition with flyout
├── Program.cs # Linux platform bootstrap
├── MauiProgram.cs # MAUI app builder
└── Pages/
├── HomePage.cs # Welcome page
├── ButtonsPage.cs # Button demonstrations
├── TextInputPage.cs # Entry, Editor, SearchBar
├── SelectionPage.cs # CheckBox, Switch, Slider
├── PickersPage.cs # Picker, DatePicker, TimePicker
├── ListsPage.cs # CollectionView demos
├── ProgressPage.cs # ProgressBar, ActivityIndicator
├── GridsPage.cs # Grid layout demos
├── DetailPage.cs # Push navigation target
└── AboutPage.cs # About information
```
## Shell Configuration
```csharp
public class AppShell : Shell
{
public AppShell()
{
FlyoutBehavior = FlyoutBehavior.Flyout;
Title = "OpenMaui Controls Demo";
// Register routes for push navigation
Routing.RegisterRoute("detail", typeof(DetailPage));
// Add flyout items
Items.Add(CreateFlyoutItem("Home", typeof(HomePage)));
Items.Add(CreateFlyoutItem("Buttons", typeof(ButtonsPage)));
// ...more items
}
}
```
## Control Demonstrations
### Buttons Page
- Default, styled, and transparent buttons
- Color variations (Primary, Success, Warning, Danger)
- Enabled/disabled state toggling
- Wide, tall, and round button shapes
- Pressed, clicked, released event handling
### Text Input Page
- Entry with placeholder and text change events
- Password entry with hidden text
- Email keyboard type
- SearchBar with search button
- Multi-line Editor
- Keyboard shortcuts guide
### Selection Page
- CheckBox with colors and disabled state
- Switch with OnColor customization
- Slider with min/max range and track colors
### Pickers Page
- Picker with items and selection events
- DatePicker with date range limits
- TimePicker with time selection
- Styled pickers with custom colors
### Lists Page
- CollectionView with string items
- CollectionView with custom data types (ColorItem, ContactItem)
- Selection handling and event feedback
### Progress Page
- ProgressBar at various percentages
- Colored progress bars
- ActivityIndicator running/stopped states
- Colored activity indicators
- Interactive slider-controlled progress
- Animated progress simulation
## Building and Running
```bash
# From the maui-linux-push directory
cd samples/ShellDemo
dotnet publish -c Release -r linux-arm64
# Run on Linux
./bin/Release/net9.0/linux-arm64/publish/ShellDemo
```
## Event Logging
Each page features an event log panel that displays control interactions in real-time:
```
[14:32:15] 3. Button clicked: Primary
[14:32:12] 2. Slider value: 75
[14:32:08] 1. CheckBox: Checked
```
## Controls Reference
| Control | Properties Demonstrated |
|---------|------------------------|
| Button | Text, BackgroundColor, TextColor, CornerRadius, IsEnabled, WidthRequest, HeightRequest |
| Entry | Placeholder, Text, IsPassword, Keyboard, FontSize |
| Editor | Placeholder, Text, HeightRequest |
| SearchBar | Placeholder, Text, SearchButtonPressed |
| CheckBox | IsChecked, Color, IsEnabled |
| Switch | IsToggled, OnColor, IsEnabled |
| Slider | Minimum, Maximum, Value, MinimumTrackColor, MaximumTrackColor, ThumbColor |
| Picker | Title, Items, SelectedIndex, TextColor, TitleColor |
| DatePicker | Date, MinimumDate, MaximumDate, TextColor |
| TimePicker | Time, TextColor |
| CollectionView | ItemsSource, SelectionMode, SelectionChanged, HeightRequest |
| ProgressBar | Progress, ProgressColor |
| ActivityIndicator | IsRunning, Color |
| Label | Text, FontSize, FontAttributes, TextColor |
| Frame | CornerRadius, Padding, BackgroundColor |
| Grid | RowDefinitions, ColumnDefinitions, RowSpacing, ColumnSpacing |
| StackLayout | Spacing, Padding, Orientation |
| ScrollView | Content scrolling |
## License
MIT License - See repository root for details.

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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net9.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="OpenMaui.Controls.Linux" Version="1.0.0-preview.*" />
</ItemGroup>
</Project>

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// TodoApp - Main Application with NavigationPage
using Microsoft.Maui.Controls;
namespace TodoApp;
public class App : Application
{
public static NavigationPage? NavigationPage { get; private set; }
public App()
{
NavigationPage = new NavigationPage(new TodoListPage())
{
Title = "OpenMaui Todo App",
BarBackgroundColor = Color.FromArgb("#2196F3"),
BarTextColor = Colors.White
};
MainPage = NavigationPage;
}
}

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// MauiProgram.cs - MAUI app configuration
using Microsoft.Maui.Hosting;
using Microsoft.Maui.Platform.Linux.Hosting;
namespace TodoApp;
public static class MauiProgram
{
public static MauiApp CreateMauiApp()
{
var builder = MauiApp.CreateBuilder();
// Configure the app
builder.UseMauiApp<App>();
// Add Linux platform support with all handlers
builder.UseLinux();
return builder.Build();
}
}

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<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="TodoApp.NewTodoPage"
Title="New Task"
BackgroundColor="#F5F7FA">
<ContentPage.Resources>
<Color x:Key="PrimaryColor">#5C6BC0</Color>
<Color x:Key="AccentColor">#26A69A</Color>
<Color x:Key="TextPrimary">#212121</Color>
<Color x:Key="TextSecondary">#757575</Color>
<Color x:Key="CardBackground">#FFFFFF</Color>
<Color x:Key="BorderColor">#E8EAF6</Color>
</ContentPage.Resources>
<ContentPage.ToolbarItems>
<ToolbarItem Text="Save" Clicked="OnSaveClicked" />
</ContentPage.ToolbarItems>
<Grid RowDefinitions="Auto,Auto,Auto,*" RowSpacing="16" Padding="20">
<!-- Header -->
<VerticalStackLayout Grid.Row="0" Spacing="4">
<Label Text="Create a new task"
FontSize="24"
TextColor="{StaticResource TextPrimary}" />
<Label Text="Fill in the details below"
FontSize="14"
TextColor="{StaticResource TextSecondary}" />
</VerticalStackLayout>
<!-- Title Section -->
<VerticalStackLayout Grid.Row="1" Spacing="8">
<Label Text="TITLE"
FontSize="13"
FontAttributes="Bold"
TextColor="{StaticResource PrimaryColor}" />
<Border BackgroundColor="{StaticResource CardBackground}"
Stroke="{StaticResource BorderColor}"
StrokeThickness="1"
Padding="16,12">
<Border.StrokeShape>
<RoundRectangle CornerRadius="10" />
</Border.StrokeShape>
<Entry x:Name="TitleEntry"
Placeholder="What needs to be done?"
FontSize="18"
TextColor="{StaticResource TextPrimary}"
PlaceholderColor="{StaticResource TextSecondary}" />
</Border>
</VerticalStackLayout>
<!-- Notes Label -->
<Label Grid.Row="2"
Text="NOTES"
FontSize="13"
FontAttributes="Bold"
TextColor="{StaticResource PrimaryColor}" />
<!-- Notes Section (fills remaining space) -->
<Border Grid.Row="3"
BackgroundColor="{StaticResource CardBackground}"
Stroke="{StaticResource BorderColor}"
StrokeThickness="1"
Padding="16,12">
<Border.StrokeShape>
<RoundRectangle CornerRadius="10" />
</Border.StrokeShape>
<Editor x:Name="NotesEditor"
Placeholder="Add notes (optional)..."
FontSize="14"
TextColor="{StaticResource TextPrimary}"
PlaceholderColor="{StaticResource TextSecondary}"
VerticalOptions="Fill" />
</Border>
</Grid>
</ContentPage>

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// NewTodoPage - Create a new todo item
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
namespace TodoApp;
public partial class NewTodoPage : ContentPage
{
private readonly TodoService _service = TodoService.Instance;
public NewTodoPage()
{
InitializeComponent();
}
private async void OnSaveClicked(object? sender, EventArgs e)
{
var title = TitleEntry.Text?.Trim();
if (string.IsNullOrEmpty(title))
{
TitleEntry.Placeholder = "Title is required!";
TitleEntry.PlaceholderColor = Colors.Red;
return;
}
_service.AddTodo(title, NotesEditor.Text ?? "");
await Navigation.PopAsync();
}
}

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// Program.cs - Linux platform entry point
using Microsoft.Maui.Platform.Linux;
namespace TodoApp;
class Program
{
static void Main(string[] args)
{
// Redirect console output to a log file for debugging
var logPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "todoapp.log");
using var logWriter = new StreamWriter(logPath, append: false) { AutoFlush = true };
var multiWriter = new MultiTextWriter(Console.Out, logWriter);
Console.SetOut(multiWriter);
Console.SetError(multiWriter);
// Global exception handler
AppDomain.CurrentDomain.UnhandledException += (sender, e) =>
{
var ex = e.ExceptionObject as Exception;
Console.WriteLine($"[FATAL] Unhandled exception: {ex?.GetType().Name}: {ex?.Message}");
Console.WriteLine($"[FATAL] Stack trace: {ex?.StackTrace}");
if (ex?.InnerException != null)
{
Console.WriteLine($"[FATAL] Inner exception: {ex.InnerException.GetType().Name}: {ex.InnerException.Message}");
Console.WriteLine($"[FATAL] Inner stack trace: {ex.InnerException.StackTrace}");
}
};
TaskScheduler.UnobservedTaskException += (sender, e) =>
{
Console.WriteLine($"[FATAL] Unobserved task exception: {e.Exception?.GetType().Name}: {e.Exception?.Message}");
Console.WriteLine($"[FATAL] Stack trace: {e.Exception?.StackTrace}");
e.SetObserved(); // Prevent crash
};
Console.WriteLine($"[Program] Starting TodoApp at {DateTime.Now}");
Console.WriteLine($"[Program] Log file: {logPath}");
try
{
// Create the MAUI app with all handlers registered
var app = MauiProgram.CreateMauiApp();
// Run on Linux platform
LinuxApplication.Run(app, args);
}
catch (Exception ex)
{
Console.WriteLine($"[FATAL] Exception in Main: {ex.GetType().Name}: {ex.Message}");
Console.WriteLine($"[FATAL] Stack trace: {ex.StackTrace}");
throw;
}
}
}
// Helper to write to both console and file
class MultiTextWriter : TextWriter
{
private readonly TextWriter[] _writers;
public MultiTextWriter(params TextWriter[] writers) => _writers = writers;
public override System.Text.Encoding Encoding => System.Text.Encoding.UTF8;
public override void Write(char value) { foreach (var w in _writers) w.Write(value); }
public override void WriteLine(string? value) { foreach (var w in _writers) w.WriteLine(value); }
public override void Flush() { foreach (var w in _writers) w.Flush(); }
}

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# TodoApp Sample
A complete task management application demonstrating OpenMaui Linux capabilities with real-world XAML patterns.
## Features
- **NavigationPage** - Full page navigation with back button support
- **CollectionView** - Scrollable list with data binding and selection
- **XAML Data Binding** - Value converters for dynamic styling
- **DisplayAlert Dialogs** - Confirmation dialogs for delete actions
- **Grid Layouts** - Complex layouts with star sizing for expanding content
- **Entry & Editor** - Single and multi-line text input
- **Border with RoundRectangle** - Modern card-style UI
- **ToolbarItems** - Navigation bar actions
## Screenshots
The app consists of three pages:
1. **TodoListPage** - Shows all tasks with completion status indicators
2. **NewTodoPage** - Create a new task with title and notes
3. **TodoDetailPage** - View/edit task details, mark complete, or delete
## Architecture
```
TodoApp/
├── App.cs # Application entry with NavigationPage
├── Program.cs # Linux platform bootstrap
├── MauiProgram.cs # MAUI app builder
├── TodoItem.cs # Data model
├── TodoService.cs # In-memory data store
├── TodoListPage.xaml(.cs) # Main list view
├── NewTodoPage.xaml(.cs) # Create task page
└── TodoDetailPage.xaml(.cs) # Task detail/edit page
```
## XAML Highlights
### Value Converters
The app uses custom converters for dynamic styling based on completion status:
- `CompletedToColorConverter` - Gray text for completed items
- `CompletedToTextDecorationsConverter` - Strikethrough for completed items
- `CompletedToOpacityConverter` - Fade completed items
- `AlternatingRowColorConverter` - Alternating background colors
### ResourceDictionary
```xml
<ContentPage.Resources>
<Color x:Key="PrimaryColor">#5C6BC0</Color>
<Color x:Key="AccentColor">#26A69A</Color>
<Color x:Key="TextPrimary">#212121</Color>
</ContentPage.Resources>
```
### CollectionView with DataTemplate
```xml
<CollectionView SelectionMode="Single" SelectionChanged="OnSelectionChanged">
<CollectionView.ItemTemplate>
<DataTemplate x:DataType="local:TodoItem">
<Border BackgroundColor="{StaticResource CardBackground}">
<Label Text="{Binding Title}" />
</Border>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
```
### Grid with Star Rows (Expanding Editor)
```xml
<Grid RowDefinitions="Auto,Auto,*,Auto,Auto" Padding="20">
<!-- Row 0: Title section (Auto) -->
<!-- Row 1: Notes label (Auto) -->
<!-- Row 2: Editor - expands to fill (*) -->
<!-- Row 3: Status section (Auto) -->
<!-- Row 4: Created date (Auto) -->
</Grid>
```
## Building and Running
```bash
# From the maui-linux-push directory
cd samples/TodoApp
dotnet publish -c Release -r linux-arm64
# Run on Linux
./bin/Release/net9.0/linux-arm64/publish/TodoApp
```
## Controls Demonstrated
| Control | Usage |
|---------|-------|
| NavigationPage | App navigation container |
| ContentPage | Individual screens |
| CollectionView | Task list with selection |
| Grid | Page layouts |
| VerticalStackLayout | Vertical grouping |
| HorizontalStackLayout | Horizontal grouping |
| Label | Text display |
| Entry | Single-line input |
| Editor | Multi-line input |
| Button | Toolbar actions |
| Border | Card styling with rounded corners |
| CheckBox | Completion toggle |
| BoxView | Visual separators |
## License
MIT License - See repository root for details.

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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net9.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="OpenMaui.Controls.Linux" Version="1.0.0-preview.*" />
</ItemGroup>
</Project>

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<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="TodoApp.TodoDetailPage"
Title="Task Details"
BackgroundColor="#F5F7FA">
<ContentPage.Resources>
<Color x:Key="PrimaryColor">#5C6BC0</Color>
<Color x:Key="AccentColor">#26A69A</Color>
<Color x:Key="DangerColor">#EF5350</Color>
<Color x:Key="TextPrimary">#212121</Color>
<Color x:Key="TextSecondary">#757575</Color>
<Color x:Key="CardBackground">#FFFFFF</Color>
<Color x:Key="BorderColor">#E8EAF6</Color>
</ContentPage.Resources>
<ContentPage.ToolbarItems>
<ToolbarItem Text="Delete" Clicked="OnDeleteClicked" />
<ToolbarItem Text="Save" Clicked="OnSaveClicked" />
</ContentPage.ToolbarItems>
<Grid RowDefinitions="Auto,Auto,*,Auto,Auto" RowSpacing="16" Padding="20">
<!-- Title Section -->
<VerticalStackLayout Grid.Row="0" Spacing="8">
<Label Text="TITLE"
FontSize="13"
FontAttributes="Bold"
TextColor="{StaticResource PrimaryColor}" />
<Border BackgroundColor="{StaticResource CardBackground}"
Stroke="{StaticResource BorderColor}"
StrokeThickness="1"
Padding="16,12">
<Border.StrokeShape>
<RoundRectangle CornerRadius="10" />
</Border.StrokeShape>
<Entry x:Name="TitleEntry"
Placeholder="Task title"
FontSize="18"
TextColor="{StaticResource TextPrimary}"
PlaceholderColor="{StaticResource TextSecondary}" />
</Border>
</VerticalStackLayout>
<!-- Notes Label -->
<Label Grid.Row="1"
Text="NOTES"
FontSize="13"
FontAttributes="Bold"
TextColor="{StaticResource PrimaryColor}" />
<!-- Notes Section (fills remaining space) -->
<Border Grid.Row="2"
BackgroundColor="{StaticResource CardBackground}"
Stroke="{StaticResource BorderColor}"
StrokeThickness="1"
Padding="16,12">
<Border.StrokeShape>
<RoundRectangle CornerRadius="10" />
</Border.StrokeShape>
<Editor x:Name="NotesEditor"
Placeholder="Add notes here..."
FontSize="14"
TextColor="{StaticResource TextPrimary}"
PlaceholderColor="{StaticResource TextSecondary}"
VerticalOptions="Fill" />
</Border>
<!-- Status Section -->
<VerticalStackLayout Grid.Row="3" Spacing="8">
<Label Text="STATUS"
FontSize="13"
FontAttributes="Bold"
TextColor="{StaticResource PrimaryColor}" />
<Border BackgroundColor="{StaticResource CardBackground}"
Stroke="{StaticResource BorderColor}"
StrokeThickness="1"
Padding="16,12">
<Border.StrokeShape>
<RoundRectangle CornerRadius="10" />
</Border.StrokeShape>
<HorizontalStackLayout Spacing="12">
<CheckBox x:Name="CompletedCheckBox"
Color="{StaticResource AccentColor}"
VerticalOptions="Center"
CheckedChanged="OnCompletedChanged" />
<Label x:Name="StatusLabel"
Text="In Progress"
FontSize="16"
TextColor="{StaticResource TextPrimary}"
VerticalOptions="Center" />
</HorizontalStackLayout>
</Border>
</VerticalStackLayout>
<!-- Created Date -->
<Label Grid.Row="4"
x:Name="CreatedLabel"
FontSize="13"
TextColor="{StaticResource TextSecondary}"
HorizontalOptions="Center"
HorizontalTextAlignment="Center" />
</Grid>
</ContentPage>

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// TodoDetailPage - View and edit a todo item
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
using Microsoft.Maui.Platform;
namespace TodoApp;
public partial class TodoDetailPage : ContentPage
{
private readonly TodoItem _todo;
private readonly TodoService _service = TodoService.Instance;
// Colors for status label
private static readonly Color AccentColor = Color.FromArgb("#26A69A");
private static readonly Color TextPrimary = Color.FromArgb("#212121");
public TodoDetailPage(TodoItem todo)
{
try
{
Console.WriteLine($"[TodoDetailPage] Constructor starting for: {todo.Title}");
InitializeComponent();
Console.WriteLine($"[TodoDetailPage] InitializeComponent complete");
_todo = todo;
// Populate fields
Console.WriteLine($"[TodoDetailPage] Setting TitleEntry.Text");
TitleEntry.Text = _todo.Title;
Console.WriteLine($"[TodoDetailPage] Setting NotesEditor.Text");
NotesEditor.Text = _todo.Notes;
Console.WriteLine($"[TodoDetailPage] Setting CompletedCheckBox.IsChecked");
CompletedCheckBox.IsChecked = _todo.IsCompleted;
Console.WriteLine($"[TodoDetailPage] Calling UpdateStatusLabel");
UpdateStatusLabel(_todo.IsCompleted);
Console.WriteLine($"[TodoDetailPage] Setting CreatedLabel.Text");
CreatedLabel.Text = $"Created {_todo.CreatedAt:MMMM d, yyyy} at {_todo.CreatedAt:h:mm tt}";
Console.WriteLine($"[TodoDetailPage] Constructor complete");
}
catch (Exception ex)
{
Console.WriteLine($"[TodoDetailPage] EXCEPTION in constructor: {ex.GetType().Name}: {ex.Message}");
Console.WriteLine($"[TodoDetailPage] Stack trace: {ex.StackTrace}");
throw;
}
}
private void OnCompletedChanged(object? sender, Microsoft.Maui.Controls.CheckedChangedEventArgs e)
{
Console.WriteLine($"[TodoDetailPage] OnCompletedChanged: {e.Value}");
UpdateStatusLabel(e.Value);
}
private void UpdateStatusLabel(bool isCompleted)
{
if (StatusLabel == null)
{
Console.WriteLine($"[TodoDetailPage] UpdateStatusLabel: StatusLabel is null, skipping");
return;
}
Console.WriteLine($"[TodoDetailPage] UpdateStatusLabel: setting to {(isCompleted ? "Completed" : "In Progress")}");
StatusLabel.Text = isCompleted ? "Completed" : "In Progress";
StatusLabel.TextColor = isCompleted ? AccentColor : TextPrimary;
}
private async void OnSaveClicked(object? sender, EventArgs e)
{
_todo.Title = TitleEntry.Text ?? "";
_todo.Notes = NotesEditor.Text ?? "";
_todo.IsCompleted = CompletedCheckBox.IsChecked;
await Navigation.PopAsync();
}
private async void OnDeleteClicked(object? sender, EventArgs e)
{
// Show confirmation dialog
var confirmed = await LinuxDialogService.ShowAlertAsync(
"Delete Task",
$"Are you sure you want to delete \"{_todo.Title}\"? This action cannot be undone.",
"Delete",
"Cancel");
if (confirmed)
{
_service.DeleteTodo(_todo);
await Navigation.PopAsync();
}
}
}

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// TodoItem - Data model for a todo item
using System.ComponentModel;
namespace TodoApp;
public class TodoItem : INotifyPropertyChanged
{
private string _title = "";
private string _notes = "";
private bool _isCompleted;
private DateTime _dueDate;
public int Id { get; set; }
/// <summary>
/// Index in the collection for alternating row colors.
/// </summary>
public int Index { get; set; }
public string Title
{
get => _title;
set
{
if (_title != value)
{
_title = value;
OnPropertyChanged(nameof(Title));
}
}
}
public string Notes
{
get => _notes;
set
{
if (_notes != value)
{
_notes = value;
OnPropertyChanged(nameof(Notes));
}
}
}
public bool IsCompleted
{
get => _isCompleted;
set
{
if (_isCompleted != value)
{
_isCompleted = value;
OnPropertyChanged(nameof(IsCompleted));
}
}
}
public DateTime DueDate
{
get => _dueDate;
set
{
if (_dueDate != value)
{
_dueDate = value;
OnPropertyChanged(nameof(DueDate));
}
}
}
public DateTime CreatedAt { get; set; } = DateTime.Now;
public event PropertyChangedEventHandler? PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}

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<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:TodoApp"
x:Class="TodoApp.TodoListPage"
Title="My Tasks"
BackgroundColor="#F5F7FA">
<ContentPage.Resources>
<ResourceDictionary>
<!-- Colors -->
<Color x:Key="PrimaryColor">#5C6BC0</Color>
<Color x:Key="PrimaryDark">#3949AB</Color>
<Color x:Key="AccentColor">#26A69A</Color>
<Color x:Key="TextPrimary">#212121</Color>
<Color x:Key="TextSecondary">#757575</Color>
<Color x:Key="CardBackground">#FFFFFF</Color>
<Color x:Key="DividerColor">#E0E0E0</Color>
<Color x:Key="CompletedColor">#9E9E9E</Color>
<!-- Converters -->
<local:AlternatingRowColorConverter x:Key="AlternatingRowColorConverter" />
<local:CompletedToColorConverter x:Key="CompletedToColorConverter" />
<local:CompletedToTextDecorationsConverter x:Key="CompletedToTextDecorationsConverter" />
<local:CompletedToOpacityConverter x:Key="CompletedToOpacityConverter" />
</ResourceDictionary>
</ContentPage.Resources>
<ContentPage.ToolbarItems>
<ToolbarItem Text="+ Add" Clicked="OnAddClicked" />
</ContentPage.ToolbarItems>
<Grid RowDefinitions="*,Auto" Padding="0">
<!-- Task List -->
<CollectionView Grid.Row="0"
x:Name="TodoCollectionView"
SelectionMode="Single"
SelectionChanged="OnSelectionChanged"
VerticalOptions="FillAndExpand"
BackgroundColor="Transparent"
Margin="16,16,16,0">
<CollectionView.EmptyView>
<VerticalStackLayout VerticalOptions="Center"
HorizontalOptions="Center"
Padding="40">
<Label Text="No tasks yet"
FontSize="22"
TextColor="{StaticResource TextSecondary}"
HorizontalOptions="Center" />
<Label Text="Tap '+ Add' to create your first task"
FontSize="14"
TextColor="{StaticResource TextSecondary}"
HorizontalOptions="Center"
Margin="0,8,0,0" />
</VerticalStackLayout>
</CollectionView.EmptyView>
<CollectionView.ItemTemplate>
<DataTemplate x:DataType="local:TodoItem">
<!-- Card-style item -->
<Grid Padding="0,6" BackgroundColor="Transparent">
<Border StrokeThickness="0"
BackgroundColor="{StaticResource CardBackground}"
Padding="16,14"
Opacity="{Binding IsCompleted, Converter={StaticResource CompletedToOpacityConverter}}">
<Border.StrokeShape>
<RoundRectangle CornerRadius="12" />
</Border.StrokeShape>
<Grid ColumnDefinitions="Auto,*" ColumnSpacing="16">
<!-- Completion indicator -->
<Border Grid.Column="0"
WidthRequest="8"
HeightRequest="44"
Margin="0"
BackgroundColor="{Binding IsCompleted, Converter={StaticResource CompletedToColorConverter}, ConverterParameter=indicator}"
VerticalOptions="Center">
<Border.StrokeShape>
<RoundRectangle CornerRadius="4" />
</Border.StrokeShape>
</Border>
<!-- Content -->
<VerticalStackLayout Grid.Column="1"
Spacing="4"
VerticalOptions="Center">
<!-- Title -->
<Label Text="{Binding Title}"
FontSize="16"
TextColor="{Binding IsCompleted, Converter={StaticResource CompletedToColorConverter}}"
TextDecorations="{Binding IsCompleted, Converter={StaticResource CompletedToTextDecorationsConverter}}" />
<!-- Notes preview -->
<Label Text="{Binding Notes}"
FontSize="13"
TextColor="{Binding IsCompleted, Converter={StaticResource CompletedToColorConverter}, ConverterParameter=notes}"
MaxLines="2"
LineBreakMode="TailTruncation" />
</VerticalStackLayout>
</Grid>
</Border>
</Grid>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
<!-- Footer Stats -->
<Border Grid.Row="1"
BackgroundColor="{StaticResource PrimaryColor}"
StrokeThickness="0"
Padding="24,14"
Margin="0">
<Grid ColumnDefinitions="Auto,Auto" ColumnSpacing="6" HorizontalOptions="Center" VerticalOptions="Center">
<Label Grid.Column="0"
Text="Tasks:"
FontSize="15"
TextColor="White" />
<Label Grid.Column="1"
x:Name="StatsLabel"
FontSize="15"
TextColor="White"
Opacity="0.9" />
</Grid>
</Border>
</Grid>
</ContentPage>

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// TodoListPage - Main page for viewing todos with XAML support
using Microsoft.Maui.Controls;
using Microsoft.Maui.Graphics;
using System.Globalization;
namespace TodoApp;
public partial class TodoListPage : ContentPage
{
private readonly TodoService _service = TodoService.Instance;
public TodoListPage()
{
Console.WriteLine("[TodoListPage] Constructor starting");
InitializeComponent();
TodoCollectionView.ItemsSource = _service.Todos;
UpdateStats();
Console.WriteLine("[TodoListPage] Constructor finished");
}
protected override void OnAppearing()
{
Console.WriteLine("[TodoListPage] OnAppearing called - refreshing CollectionView");
base.OnAppearing();
// Refresh indexes for alternating row colors
_service.RefreshIndexes();
// Refresh the collection view
TodoCollectionView.ItemsSource = null;
TodoCollectionView.ItemsSource = _service.Todos;
Console.WriteLine($"[TodoListPage] ItemsSource set with {_service.Todos.Count} items");
UpdateStats();
}
private async void OnAddClicked(object sender, EventArgs e)
{
await Navigation.PushAsync(new NewTodoPage());
}
private async void OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
{
try
{
Console.WriteLine($"[TodoListPage] OnSelectionChanged: {e.CurrentSelection.Count} items selected");
if (e.CurrentSelection.FirstOrDefault() is TodoItem todo)
{
Console.WriteLine($"[TodoListPage] Navigating to TodoDetailPage for: {todo.Title}");
TodoCollectionView.SelectedItem = null; // Deselect
var detailPage = new TodoDetailPage(todo);
Console.WriteLine($"[TodoListPage] Created TodoDetailPage, pushing...");
await Navigation.PushAsync(detailPage);
Console.WriteLine($"[TodoListPage] Navigation complete");
}
}
catch (Exception ex)
{
Console.WriteLine($"[TodoListPage] EXCEPTION in OnSelectionChanged: {ex.GetType().Name}: {ex.Message}");
Console.WriteLine($"[TodoListPage] Stack trace: {ex.StackTrace}");
}
}
private void UpdateStats()
{
var completed = _service.CompletedCount;
var total = _service.TotalCount;
if (total == 0)
{
StatsLabel.Text = "";
}
else
{
StatsLabel.Text = $"{completed} of {total} completed";
}
}
}
/// <summary>
/// Converter for alternating row background colors.
/// </summary>
public class AlternatingRowColorConverter : IValueConverter
{
public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
{
if (value is int index)
{
return index % 2 == 0 ? Colors.White : Color.FromArgb("#F5F5F5");
}
return Colors.White;
}
public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
/// <summary>
/// Converter for completed task text color and indicator color.
/// </summary>
public class CompletedToColorConverter : IValueConverter
{
// Define colors
private static readonly Color PrimaryColor = Color.FromArgb("#5C6BC0");
private static readonly Color AccentColor = Color.FromArgb("#26A69A");
private static readonly Color CompletedColor = Color.FromArgb("#9E9E9E");
private static readonly Color TextPrimary = Color.FromArgb("#212121");
private static readonly Color TextSecondary = Color.FromArgb("#757575");
public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
{
bool isCompleted = value is bool b && b;
string param = parameter as string ?? "";
// Indicator bar color
if (param == "indicator")
{
return isCompleted ? CompletedColor : AccentColor;
}
// Text colors
if (isCompleted)
{
return CompletedColor;
}
else
{
return param == "notes" ? TextSecondary : TextPrimary;
}
}
public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
/// <summary>
/// Converter for completed task text decorations (strikethrough).
/// </summary>
public class CompletedToTextDecorationsConverter : IValueConverter
{
public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
{
bool isCompleted = value is bool b && b;
return isCompleted ? TextDecorations.Strikethrough : TextDecorations.None;
}
public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
/// <summary>
/// Converter for completed task opacity (slightly faded when complete).
/// </summary>
public class CompletedToOpacityConverter : IValueConverter
{
public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
{
bool isCompleted = value is bool b && b;
return isCompleted ? 0.7 : 1.0;
}
public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}

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// TodoService - Manages todo items
using System.Collections.ObjectModel;
namespace TodoApp;
public class TodoService
{
private static TodoService? _instance;
public static TodoService Instance => _instance ??= new TodoService();
private int _nextId = 1;
public ObservableCollection<TodoItem> Todos { get; } = new();
private TodoService()
{
// Add sample todos with varying lengths to test MaxLines=2 with ellipsis
AddTodo("Learn OpenMaui Linux", "Explore the SkiaSharp-based rendering engine for .NET MAUI on Linux desktop. This is a very long description that should wrap to multiple lines and demonstrate the ellipsis truncation feature when MaxLines is set to 2.");
AddTodo("Build amazing apps", "Create cross-platform applications that run on Windows, macOS, iOS, Android, and Linux! With OpenMaui, you can write once and deploy everywhere.");
AddTodo("Share with the community", "Contribute to the open-source project and help others build great Linux apps. Join our growing community of developers who are passionate about bringing .NET MAUI to Linux.");
}
public TodoItem AddTodo(string title, string notes = "")
{
var todo = new TodoItem
{
Id = _nextId++,
Index = Todos.Count, // Set index for alternating row colors
Title = title,
Notes = notes,
DueDate = DateTime.Today.AddDays(7)
};
Todos.Add(todo);
return todo;
}
/// <summary>
/// Refreshes the Index property on all items for alternating row colors.
/// </summary>
public void RefreshIndexes()
{
for (int i = 0; i < Todos.Count; i++)
{
Todos[i].Index = i;
}
}
public TodoItem? GetTodo(int id)
{
return Todos.FirstOrDefault(t => t.Id == id);
}
public void DeleteTodo(TodoItem todo)
{
Todos.Remove(todo);
}
public int CompletedCount => Todos.Count(t => t.IsCompleted);
public int TotalCount => Todos.Count;
}

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