Hi Saumya,
Thanks for your interest in Syncfusion Products.
To Drag rows in GridDataBoundGrid you need to handle some codes so that by reordering the underlying Datasource you can achieve this behavior. Please refer the following KB link discussing this topic.
http://www.syncfusion.com/support/kb/582/How-to-drag-and-drop-rows-or-moving-rows-by-single-click-on-the-row-header-in--span-class=Please refer the sample from the following link:
http://files.syncfusion.com/samples/KB/Grid.Windows/GDBG_Drag/DragRowsOnFirstClick.zipPlease let us know if you have any further concerns.
Regards,
Arulraj.A