Selective Canvas.ZIndex between two controls

I have two chart component开发者_Python百科s. One is set a higher Canvas.ZIndex than the other. But, I want the axis of the chart with the higher Canvas.ZIndex to have a lower Canvas.ZIndex than the axis of the chart with the lower Canvas.ZIndex. The axis is expectedly in the subtree of the chart. Is this possible?

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You should use the Adorner Layer, which is always above anything else, and made specifically for those situations.

http://msdn.microsoft.com/en-us/library/ms743737.aspx