Avalonia/samples/ControlCatalog/Pages/ListBoxPage.xaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             x:Class="ControlCatalog.Pages.ListBoxPage">
  <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">
      <StackPanel Orientation="Vertical" Spacing="8">
        <ListBox Items="{Binding Items}"
                 SelectedItem="{Binding SelectedItem}"
                 SelectedItems="{Binding SelectedItems}"
                 AutoScrollToSelectedItem="True"
                 SelectionMode="{Binding SelectionMode}"
                 Width="250"
                 Height="350"/>

        <Button Command="{Binding AddItemCommand}">Add</Button>

        <Button Command="{Binding RemoveItemCommand}">Remove</Button>

        <Button Command="{Binding SelectRandomItemCommand}">Select Random Item</Button>

        <ComboBox SelectedIndex="{Binding SelectionMode, Mode=TwoWay}">
          <ComboBoxItem>Single</ComboBoxItem>
          <ComboBoxItem>Multiple</ComboBoxItem>
          <ComboBoxItem>Toggle</ComboBoxItem>
          <ComboBoxItem>AlwaysSelected</ComboBoxItem>
        </ComboBox>
      </StackPanel>
    </StackPanel>
  </StackPanel>
</UserControl>