Hi Venatir,
Thanks for your interest in Syncfusion products.
Sorry for the long delay in responding to you.
To disable the scrolling of grid while dragging, you have to handle the DragOver, DragEnter and MouseMove events with suitable code.
Please refer to the following sample that implements this.
http://websamples.syncfusion.com//samples/Grid.Windows/F77485.zipRegards,
Rajadurai