You can mix the two on the same form, but the biggest problem is they look different.

>Many thanks for all your comments.
>I'd be inteested to know control is being used in dot net (Windows Forms) as a Menu ? (To call forms)
>Also, I notice a lot of controls now (in VS 2010 I am still using VS2008) in WPF. Is it possible to use say a Menu in WPF and call a Windows Form Form control..... Is there any issue in mix and matching Windows forms and WPF controls ?
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>Regards,
>Gerard