C# Avalonia 10- DynamicResource

DynamicResource.axaml代码

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        Height="300" Width="300"
        x:Class="AvaloniaUI.DynamicResource"
        Title="DynamicResource">
    <Window.Resources>
        <ImageBrush x:Key="TileBrush"
                    Source="avares://AvaloniaUI/Resources/Images/happyface.jpg"
                    Stretch="None"
                    TileMode="Tile"
                    DestinationRect="0 0 32 32"
                    Opacity="0.3" />
    </Window.Resources>
    <StackPanel Margin="5">
        <Button Background="{DynamicResource TileBrush}" Padding="5"
            FontWeight="Bold" FontSize="14" Margin="5"
              >Uses a Dynamic Resource</Button>

        <Button Padding="5" Margin="5" Click="cmdChange_Click"
            FontWeight="Bold" FontSize="14">Change the Brush</Button>

        <Button Background="{StaticResource TileBrush}" Padding="5" Margin="5"
          FontWeight="Bold" FontSize="14"
              >Uses a Static Resource</Button>
    </StackPanel>
</Window>

DynamicResource.axaml.cs代码

using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using Avalonia.Media;

namespace AvaloniaUI;

public partial class DynamicResource : Window
{
    public DynamicResource()
    {
        InitializeComponent();
    }

    private void cmdChange_Click(object? sender, RoutedEventArgs e)
    {
        this.Resources["TileBrush"] = new SolidColorBrush(Colors.LightBlue);
    }
}

运行效果