Avalonia/samples/ControlCatalog/Pages/ListBoxPage.xaml

<UserControl xmlns="https://github.com/avaloniaui">
  <StackPanel Orientation="Vertical" Spacing="4">
    <TextBlock Classes="h1">ListBox</TextBlock>
    <TextBlock Classes="h2">Hosts a collection of ListBoxItem.</TextBlock>

    <StackPanel Orientation="Horizontal"
              Margin="0,16,0,0"
              HorizontalAlignment="Center"
              Spacing="16">
      <ListBox Items="{Binding}" Width="250" Height="350"></ListBox>
    </StackPanel>
  </StackPanel>
</UserControl>