UVtools/UVtools.WPF/Windows/AboutWindow.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"
        x:Class="UVtools.WPF.Windows.AboutWindow"
        WindowStartupLocation="CenterOwner"
        SizeToContent="WidthAndHeight"
        CanResize="False"
        Title="About UVtools"
        Icon="/Assets/Icons/UVtools.ico">

  <StackPanel Orientation="Vertical">
    <StackPanel VerticalAlignment="Center" Orientation="Horizontal">
      <Image Source="/Assets/Icons/UVtools.ico" Width="256"/>
      <Grid 
        RowDefinitions="Auto,10,Auto,10,Auto,10,Auto,10,*"
        Margin="20"
        >

        <TextBlock Grid.Row="0" Text="{Binding Software}"/>
        <TextBlock Grid.Row="2" Text="{Binding Version}"/>
        <TextBlock Grid.Row="4" Text="{Binding Copyright}"/>
        <TextBlock Grid.Row="6" Text="{Binding Company}"/>
        <TextBox Grid.Row="8" 
                 IsReadOnly="True"
                 Text="{Binding Description}"/>
      </Grid>
    </StackPanel>

    <Border Background="WhiteSmoke">
        <Button 
          Command="{Binding Close}"
          HotKey="Escape"
          Padding="10" 
          Margin="20" 
          HorizontalAlignment="Right">
          <StackPanel Spacing="10" VerticalAlignment="Center" Orientation="Horizontal">
            <Image Source="/Assets/Icons/exit-16x16.png"/>
            <TextBlock Grid.Row="6" Text="Close"/>
          </StackPanel>
        </Button>
    </Border>
    
  </StackPanel>
</Window>