Hi Wirawan,
If you are using the GridDataBoundGrid, instead of wiring and unwiring the FilterBar try hiding it by setting its height.
this.gridDataBoundGrid1.Model.RowHeights[2] = 0; // Hide filterbar row
this.gridDataBoundGrid1.Model.RowHeights[2] = 17; // Show filterbar row
The GridGroupingControl is recommended for hierarchical tables. But still I am not able to see any mentioned issue. Can you see the issue in the attached sample?
Regards,
Calvin.
40383.zip