Drag a WPF control to a WinForm
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I would like to create an application in which the user will drag controls from a Controls Toolbox to a WinForm screen (which is a screen of an existing app).

I find it problematic to drag a WPF to a Winform, so we thought of the option to place the control on the screen as an image. 
Due to the fact that the user should be able to move the control on the screen - using an image maybe isn't the best thing to do...

Maybe we should use an invisible grid? But what's the best way for doing it?

Does anyone have any good advice or sample?

Thanks!
Lior. 