Silverlight: Access parent data context from DataTemplate?

I'm using Silverlight 4开发者_运维问答. I have an ItemsControl with a custom DataTemplate. From that DataTemplate, I would like to bind to something in the UserControl's DataContext - not the DataContext of a specific element in the items control. Is there a way to do this?

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This should answer your question : Access parent DataContext from DataTemplate

<ItemsControl x:Name="level1Lister" ItemsSource={Binding MyLevel1List}>
  <ItemsControl.ItemTemplate>
    <DataTemplate>
      <Button Content={Binding MyLevel2Property}
              Command={Binding ElementName=level1Lister, Path=DataContext.MyLevel1Command}
              CommandParameter={Binding MyLevel2Property}>
      </Button>
    <DataTemplate>
  <ItemsControl.ItemTemplate>
</ItemsControl>