<ItemsControl>
  <ItemsControl.ItemsSource>
    <x:Array xmlns:sys="clr-namespace:System;assembly=mscorlib"
             Type="{x:Type sys:String}">
      <sys:String>toe</sys:String>
      <sys:String>foot</sys:String>
      <sys:String>ankle</sys:String>
      <sys:String>knee</sys:String>
      <sys:String>thigh</sys:String>
    </x:Array>
  </ItemsControl.ItemsSource>

  <ItemsControl.ItemTemplate>
    <DataTemplate>
      <WrapPanel>
        <TextBlock Text="The " />
        <TextBlock Text="{Binding RelativeSource={RelativeSource PreviousData}}" />
        <TextBlock Text=" bone's connected to the " />
        <TextBlock Text="{Binding}" />
        <TextBlock Text=" bone" />
      </WrapPanel>
      <DataTemplate.Triggers>
        <DataTrigger Value="{x:Null}"
            Binding="{Binding RelativeSource={RelativeSource PreviousData}}">
          <Setter Property="Visibility" Value="Collapsed" />
        </DataTrigger>
      </DataTemplate.Triggers>
    </DataTemplate>
  </ItemsControl.ItemTemplate>

</ItemsControl>

