Hi Amiya,
There is no built-in support for this. If you want to keep HiddenRange after the sort changes in DataBoundGrid, you would have to derive the GridDataBound control and override the SortColumn Method to acheive this. Please refer to the attached sample for more details and let me know if this helps.
Sample :
GDBGKeepHiddenRangeANDSelectionOnSort.zipBest regards,
Haneef