Drop target interface.
| CanAcceptDrop | Indicates if the dragged source can be dropped on the target interface. | 
| DragEnter | This method is automatically called when the dragged source intersects the drop target. | 
| DragExited | This method is automatically called when dragging ends and the drag source is not over a valid drop target. | 
| DragLeave | This method is automatically called when the dragged source no longer intersects the drop target. | 
| DragPerform | "This method is automatically called when a drag is performed." | 
| DragUpdated | This method is automatically called when the drag source is updated. |