Drag & drop from radtreeview across frames

[Nitin Nitin]

Hello,

I have a mainpage.xaml which has radtreeview and a frame which is loaded with contentpage.xaml

Now, I would like to drag treeview item and drop it to contentpage's gridview or any other control.
You can see the image attached to get an idea of the implementation.
Please suggest me a solution. I would really appreciate if you would give an working example.

Thanks.