I have an application where I use silverlight 4 + Telerik controls Q2 + Prism. When I drag and drop some element from one control to another one, I want to set in the drag cue a image contained in my xap but the image isn't displayed.
Curiously, If I show this image in the main.xaml (for example in a image control) and after that I do drag and drop, the image is displayed properly in the drag cue. It's like the image must be registered in memory or something like that in order to be used.
Do you know if it's necessary to register images or load them in memory in order to be used later in the drag cue?
I have tested setting
RadDragAndDropManager.ExecutionMode = DragExecutionMode.Legacy;
in OnDragQuery and in App constructor but it doesn't work.
Thanks a lot!