Avalonia/tests/Avalonia.Generators.Tests/Views/DataTemplates.xml

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        x:Class="Sample.App.DataTemplates">
    <StackPanel>
        <TextBox x:Name="UserNameTextBox"
                 Placeholder="Username input"
                 UseFloatingPlaceholder="True" />
        <ListBox Name="NamedListBox">
            <ListBox.ItemTemplate>
                <DataTemplate x:Name="NamedDataTemplate">
                    <TextBox x:Name="TemplatedTextBox"
                             Placeholder="Templated input"
                             UseFloatingPlaceholder="True" />
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </StackPanel>
</Window>