WP7 Finding a ContextMenu's owner

I am dynamically populating the contents of a StackPanel in my application by reading an XML file. Each child of the StackPanel is itself another StackPanel wh开发者_JAVA技巧ich contains different UIElement objects. The reason for the nested StackPanel design is because I want to associate one of 3 different ContextMenus with of these child StackPanels.

So the structure looks like this:

  ---- StackPanel parent
       |
       ---- StackPanel child
       |    |
       |    ---- TextBlock
       |
       ---- StackPanel child
       |    |
       |    ---- TextBox
       |
       ---- StackPanel child
       |    |
       |    ---- Image
       |
       .
       .
       .

For each StackPanel child I'm choosing from amongst 3 ContextMenus and attaching them as follows:

var stackPanels = parentStackPanel.Children.OfType<StackPanel>();

for( int i = 0; i < stackPanels.Count(); ++i ) {
  if( someCondition ) {
    ContextMenuService.SetContextMenu( stackPanels.ElementAt( i ), MyContextMenu1 );

  } else if( someOtherCondition ) {
    ContextMenuService.SetContextMenu( stackPanels.ElementAt( i ), MyContextMenu2 );

  } else {
    ContextMenuService.SetContextMenu( stackPanels.ElementAt( i ), MyContextMenu3 );

  }
}

All MenuItems under all 3 ContextMenus have the same Click handler.

Now, finally, the question: How do I determine which StackPanel child's ContextMenu was invoked and clicked? Inspecting the sender object within the click handler in the debugger shows that a ContextMenu has an internal DependencyObject named Owner which contains a reference to the StackPanel, this is exactly what I want but of course, I can't access it in code that way.

I could solve the problem by adding a MouseLeftButtonDown handler to each child StackPanel, saving the one that was last selected and then retrieving this within the ContextMenu handler but this solution feels a little ugly. Is there a better way to do this?

Thanks in advance for your help!

If you cast the sender as a UIElement in the click event handler you should be able to get at whatever you need to identify the actual item which was clicked.

(sender as UIElement).Property

Alternatively cast as a DependencyObject (if possible) and use that to walk the visual Tree:

VisualTreeHelper.GetParent((sender as DependencyObject))