自定义messagebox_使用自定义MessageBox的AvaloniaUI功能

可以使用AvaloniaUI中的Dialogs类来创建自定义的MessageBox。以下是一个示例：

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

public class CustomMessageBox : Window
{
    public CustomMessageBox()
    {
        this.InitializeComponent();
        this.DataContext = this;
    }

    public static async Task<MessageBoxResult> Show(string message, string title, MessageBoxButton buttons)
    {
        var msgBox = new CustomMessageBox();
        msgBox.Message = message;
        msgBox.Title = title;
        msgBox.Buttons = buttons;
        var result = await msgBox.ShowDialog<MessageBoxResult>();
        return result;
    }

    private void InitializeComponent()
    {
        AvaloniaXamlLoader.Load(this);
    }

    public string Message { get; set; }
    public string Title { get; set; }
    public MessageBoxButton Buttons { get; set; }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        var button = (Button)sender;
        var result = button.Content.ToString().ToLower();
        this.Close(result == "ok" ? MessageBoxResult.OK : MessageBoxResult.Cancel);
    }
}

然后在XAML文件中定义MessageBox的布局：

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        x:Class="CustomMessageBox"
        Width="300"
        Height="150"
        WindowStartupLocation="CenterScreen"
        ShowInTaskbar="False"
        Topmost="True"
        CanResize="False"
        Title="{Binding Title}">
    <StackPanel>
        <TextBlock Text="{Binding Message}" Margin="10,10,10,20"/>
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,0,10,10">
            <Button Content="OK" Margin="0,0,10,0" Click="Button_Click"/>
            <Button Content="Cancel" Click="Button_Click"/>
        </StackPanel>
    </StackPanel>
</Window>

最后，在代码中调用CustomMessageBox.Show方法来显示MessageBox：

var result = await CustomMessageBox.Show("Are you sure you want to delete this file?", "Confirm Delete", MessageBoxButton.OKCancel);
if (result == MessageBoxResult.OK)
{
    // Delete the file
}