Remotely/Desktop.Linux/Controls/MessageBox.axaml

<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"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        xmlns:vm="clr-namespace:Remotely.Desktop.Linux.ViewModels;assembly=Remotely_Desktop"
        x:Class="Remotely.Desktop.Linux.Controls.MessageBox"
        Icon="/Assets/favicon.ico"
        Title="{Binding Caption}" 
        SizeToContent="WidthAndHeight" MinWidth="300" MinHeight="100" 
        WindowStartupLocation="CenterScreen">
  <Window.DataContext>
    <vm:MessageBoxViewModel></vm:MessageBoxViewModel>
  </Window.DataContext>
  <StackPanel Margin="10, 20">
    <TextBlock Text="{Binding Message}"></TextBlock>

    <Grid Margin="0,20,0,0">
      <Button Classes="NormalButton" HorizontalAlignment="Right" IsVisible="{Binding IsOkButtonVisible}"
              Command="{Binding OKCommand}"
              CommandParameter="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}}"
              Content="OK">
      </Button>
      <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
        <Button Classes="NormalButton" HorizontalAlignment="Right" IsVisible="{Binding AreYesNoButtonsVisible}" Margin="5,0,5,0"
                Command="{Binding YesCommand}"
                CommandParameter="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}}"
                Content="Yes">
        </Button>
        <Button Classes="NormalButton" HorizontalAlignment="Right" IsVisible="{Binding AreYesNoButtonsVisible}" Margin="5,0,5,0"
                Command="{Binding NoCommand}"
                CommandParameter="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}}"
                Content="No">
        </Button>
      </StackPanel>
      
    </Grid>

  </StackPanel>
</Window>