如何在Silverlight中使用DataTemplate显示单个项目？

<DataTemplate x:Key="MyDataTemplate">
   <StackPanel>
        <TextBlock Text="{Binding Property1}" />
        <TextBlock Text="{Binding Property2}" />
        <TextBlock Text="{Binding Property3}" />
    </StackPanel>
</DataTemplate>

<ListBox x:Name="MyListBox" ItemTemplate="{StaticResource MyDataTemplate}">
    <ListBox.Items>
       <local:MyItem Property1="Value1" Property2="Value2" Property3="Value3" />
       <local:MyItem Property1="Value4" Property2="Value5" Property3="Value6" />
    </ListBox.Items>
</ListBox>

MyListBox.ItemsSource = MyItemList;