RadListBox - PreviewDrop - how to get the datacontext of the item being dropped ?

[Luc Cappaert]

I am using 2 listboxes with drag and drop enabled, 1 being the "source" and one being the "destination".
I need to manipulate the items in the "destination" RadListBox when a user drops an item from the "source" listbox; after a certain validation.

I wired the "PreviewDrop" event; but fail to see how I can get the datacontext of the element that is being dropped by the user.
(I worked through the properties of the DragEventArgs parameter; but couldn't find the datacontext of the item that is being dropped)

Does anyone know how to determine which item the user is dropping on my "destination" RadListBox ?

[George]

Hello Luc,

I would suggest using a custom DragDropBehavior for the destination RadListBox control:

• Inherit the ListBoxDragDropBehavior
• Override the Drop method. The DragDropState object gives you information about the destination itemssource, draggeditems, insert index and etc. Here you could add some custom logic.
• Set the CustomDragDropBehavior to the destination RadListBox.

You can find the attached sample as well. Hope this helps.

Regards,
George
the Telerik team

[Luc Cappaert]

George, thanks a lot for this answer and sample !