title: DragAndDrop selectedItems of one silverlight Datagrid into another
body: <p>Currently I am using "DataGridDragDropTarget" to Drag a row from one datagrid to another, but a client want to be able to select multiple rows from one datagrid and drop them into another.</p>
  
  <p>I played around a bit but realized "DataGridDragDropTarget" seems to be able to drag and drop single row at a time only. </p>
  
  <p>Is there any alternative way to DragDrop multiple selected rows? </p>