inabox/InABox.Avalonia/Dialogs/MessageDialog/MessageDialogView.axaml

<UserControl 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:dialogs="clr-namespace:InABox.Avalonia.Dialogs"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="InABox.Avalonia.Dialogs.MessageDialogView"
			 x:DataType="dialogs:MessageDialogViewModel"
			 MinWidth="150">
	<UserControl.Resources>
		<DataTemplate x:Key="ButtonTemplate" DataType="dialogs:MessageDialogButton">
			<Button Classes="Standard"
					Content="{Binding Content}"
					Command="{Binding $parent[ItemsControl].((dialogs:MessageDialogViewModel)DataContext).ButtonClickCommand}"
					CommandParameter="{Binding}"/>
		</DataTemplate>
	</UserControl.Resources>
	<Grid>
		<Grid.RowDefinitions>
			<RowDefinition Height="*" MinHeight="100"/>
			<RowDefinition Height="Auto"/>
		</Grid.RowDefinitions>
		<Grid.ColumnDefinitions>
			<ColumnDefinition Width="*"/>
		</Grid.ColumnDefinitions>
		<TextBlock Text="{Binding Message}" Grid.Row="0"
				   VerticalAlignment="Center" TextWrapping="Wrap" Margin="5"/>
		<Grid Grid.Row="1">
			<Grid.ColumnDefinitions>
				<ColumnDefinition Width="Auto"/>
				<ColumnDefinition Width="*"/>
				<ColumnDefinition Width="Auto"/>
			</Grid.ColumnDefinitions>
			<ItemsControl ItemsSource="{Binding LeftButtons}"
						  ItemTemplate="{StaticResource ButtonTemplate}"
						  Grid.Column="0">
				<ItemsControl.ItemsPanel>
					<ItemsPanelTemplate>
						<StackPanel Orientation="Horizontal"/>
					</ItemsPanelTemplate>
				</ItemsControl.ItemsPanel>
			</ItemsControl>
			<ItemsControl ItemsSource="{Binding RightButtons}"
						  ItemTemplate="{StaticResource ButtonTemplate}"
						  Grid.Column="2">
				<ItemsControl.ItemsPanel>
					<ItemsPanelTemplate>
						<StackPanel Orientation="Horizontal"/>
					</ItemsPanelTemplate>
				</ItemsControl.ItemsPanel>
			</ItemsControl>
		</Grid>
	</Grid>
</UserControl>