Hi Adam ,
I am sorry for the delayed answer.
If the DragQuery method is in the context of a UserControl or other control that has a resource dictionary, you can ge the template from the resources of the UserControl like so:
This is done in this example:
If you want, you may put this template in the ResourceDictionary of the RadGridView so that the code for this handler will be more generic.
Do you think this will work in your case?
the Telerik team