WPF contentcontrol extend beyond the bounds of its parent control

This is a sort of extension of this question I asked yesterday (the question gave me a contentcontrol that can overlay the current control). I now have a contentcontrol that can be overlayed on the current control via bindings (a modal type window). This works well and I am happy with this. One great feature would be if I could get the overlay to go over its parent.

currently the overlay will go into "My Control" control. What I would like is if I can still define it in that control (as that is were it is needed), but when it is displayed it can cover the whole main content area and / or t开发者_运维百科he main window.

is this even possible?

Thanks

Sure it's possible, just wrap it into a Popup! :) You might have to manually stretch it though, but Popup is the control which will let you go outside the bounds of the parent view.

Another way is to host the MainContent in a grid and add a collapsed content control after the MainContent.

To show the popup: put it in the collapsed content control and make it visible. To hide the popup: collapse the contentn control and remove the popup.