MyAvaloniaDemo/Views/Pages/DialogHostPageView.axaml

<reactive:ReactiveUserControl 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"
             xmlns:vm="using:MyAvaloniaApp.ViewModels.Pages"
             xmlns:dialogHost="clr-namespace:DialogHostAvalonia;assembly=DialogHost.Avalonia"
             xmlns:heroicons="clr-namespace:HeroIconsAvalonia.Controls;assembly=HeroIconsAvalonia"
             xmlns:reactive="clr-namespace:Avalonia.ReactiveUI;assembly=Avalonia.ReactiveUI"
             mc:Ignorable="d"
             x:Class="MyAvaloniaApp.Views.Pages.DialogHostPageView"
             x:DataType="vm:DialogHostPageViewModel">

    <Design.DataContext>
        <vm:DialogHostPageViewModel />
    </Design.DataContext>

    <dialogHost:DialogHost IsOpen="{Binding IsDialogOpen}">
        <dialogHost:DialogHost.DialogContent>
            <Border Background="{StaticResource BackgroundWhite}"
                    CornerRadius="16"
                    Padding="24"
                    Width="380">
                <StackPanel Spacing="18">
                    <Grid ColumnDefinitions="Auto,*" ColumnSpacing="12">
                        <Border Grid.Column="0"
                                Width="40"
                                Height="40"
                                CornerRadius="20"
                                Background="{Binding DialogAccentBrush}"
                                VerticalAlignment="Center">
                            <heroicons:HeroIcon Type="{Binding DialogIcon}"
                                               Width="22"
                                               Height="22"
                                               Foreground="White"
                                               HorizontalAlignment="Center"
                                               VerticalAlignment="Center"/>
                        </Border>
                        <StackPanel Grid.Column="1" Spacing="6">
                            <TextBlock Text="{Binding DialogTitle}"
                                       FontSize="18"
                                       FontWeight="SemiBold"
                                       Foreground="{StaticResource TextPrimary}"/>
                            <TextBlock Text="{Binding DialogMessage}"
                                       TextWrapping="Wrap"
                                       FontSize="14"
                                       Foreground="{StaticResource SecondaryGrayDark}"
                                       MaxWidth="260"/>
                        </StackPanel>
                    </Grid>

                    <CheckBox Content="记住我的选择"
                              IsChecked="{Binding RememberChoice}"
                              Margin="0,4,0,0"
                              IsVisible="{Binding IsRememberChoiceVisible}"/>

                    <StackPanel Orientation="Horizontal"
                                HorizontalAlignment="Right"
                                Spacing="10">
                        <Button Content="{Binding SecondaryButtonText}"
                                MinWidth="96"
                                Command="{Binding CancelDialogCommand}"
                                IsVisible="{Binding HasSecondaryButton}"/>
                        <Button Content="{Binding PrimaryButtonText}"
                                MinWidth="96"
                                Command="{Binding ConfirmDialogCommand}"
                                Background="{Binding DialogAccentBrush}"
                                Foreground="White"
                                BorderThickness="0"
                                CornerRadius="8"
                                IsVisible="{Binding IsPrimaryButtonVisible}"/>
                    </StackPanel>
                </StackPanel>
            </Border>
        </dialogHost:DialogHost.DialogContent>

        <Grid RowDefinitions="Auto,Auto,*" ColumnDefinitions="*" Margin="20" Background="Transparent">
            <StackPanel Spacing="8">
                <TextBlock Text="DialogHost 示例"
                           FontSize="20"
                           FontWeight="SemiBold"
                           Foreground="{StaticResource TextPrimary}"/>
                <TextBlock Text="点击下方按钮体验 DialogHost.Avalonia 提供的模态对话框。"
                           FontSize="14"
                           Foreground="{StaticResource SecondaryGrayDark}"/>
            </StackPanel>

            <WrapPanel Grid.Row="1"
                       Margin="0,18,0,0"
                       Orientation="Horizontal">
                <Button Content="通用提示"
                        Padding="18,10"
                        Margin="0,0,12,12"
                        Command="{Binding ShowDialogCommand}"
                        CommandParameter="info"
                        Background="#1E3B82F6"
                        BorderBrush="Transparent"
                        Foreground="{StaticResource TextPrimary}"
                        CornerRadius="10"/>
                <Button Content="确认弹窗"
                        Padding="18,10"
                        Margin="0,0,12,12"
                        Command="{Binding ShowDialogCommand}"
                        CommandParameter="confirm"
                        Background="#1E2563FF"
                        BorderBrush="Transparent"
                        Foreground="White"
                        CornerRadius="10"/>
                <Button Content="成功提示"
                        Padding="18,10"
                        Margin="0,0,12,12"
                        Command="{Binding ShowDialogCommand}"
                        CommandParameter="success"
                        Background="#FF22C55E"
                        BorderBrush="Transparent"
                        Foreground="White"
                        CornerRadius="10"/>
                <Button Content="失败提示"
                        Padding="18,10"
                        Margin="0,0,12,12"
                        Command="{Binding ShowDialogCommand}"
                        CommandParameter="error"
                        Background="#FFEF4444"
                        BorderBrush="Transparent"
                        Foreground="White"
                        CornerRadius="10"/>
                <Button Content="警告提示"
                        Padding="18,10"
                        Margin="0,0,12,12"
                        Command="{Binding ShowDialogCommand}"
                        CommandParameter="warning"
                        Background="#FFF59E0B"
                        BorderBrush="Transparent"
                        Foreground="{StaticResource TextPrimary}"
                        CornerRadius="10"/>
                <Button Content="成功提示(5s)"
                        Padding="18,10"
                        Margin="0,0,12,12"
                        Command="{Binding ShowDialogCommand}"
                        CommandParameter="success:5"
                        Background="#1422C55E"
                        BorderBrush="Transparent"
                        Foreground="White"
                        CornerRadius="10"/>
            </WrapPanel>

            <Border Grid.Row="2"
                    Margin="0,24,0,0"
                    Padding="16"
                    Background="{StaticResource BackgroundLight}"
                    BorderBrush="{StaticResource BorderLight}"
                    BorderThickness="1"
                    CornerRadius="8">
                <StackPanel Spacing="6">
                    <TextBlock Text="最近操作"
                               FontSize="16"
                               FontWeight="SemiBold"
                               Foreground="{StaticResource TextPrimary}"/>
                    <TextBlock Text="{Binding LastActionMessage, FallbackValue=尚未进行任何操作}"/>
                </StackPanel>
            </Border>
        </Grid>
    </dialogHost:DialogHost>
</reactive:ReactiveUserControl>