Silverlight 4: Drag and Drop DataGrids with Access to the Data Being Dropped

If you’ve been searching the web for a good sample of how to drag and drop data from one DataGrid to another in Silverlight, you’ve probably found some great samples out there, showing “how easy” it can be by just surrounding your DataGrid with DataGridDragDropTarget tags.  In fact, if you do that, you can drag and drop data from one grid to the other.  The problem is that most of these demos are