Hide the grid.,Delete the data from the grid,Unhide the grid

1) Hide the grid.

&Rowset0 = GetLevel0();
&Row0 = &Rowset0(1);
&Rowset1 = &Row0.GetRowset(Scroll.);
&Rowset1.HideAllRows();

2) Delete the data from the grid

&Rowset0 = GetLevel0();
&Row0 = &Rowset0(1);
&Rowset1 = &Row0.GetRowset(Scroll.);
For &i = &Rowset1.ActiveRowCount To 1 Step - 1
&Rowset1.DeleteRow(&i);
End-For;

OR

If the data is present in the component buffer & not present in the data base, then use function flush() to delete the data from the buffer.

&Rowset0 = GetLevel0();
&Row0 = &Rowset0(1);
&Rowset1 = &Row0.GetRowset(Scroll.);
&Rowset1.flush();

3) Unhide the grid

&Rowset0 = GetLevel0();
&Row0 = &Rowset0(1);
&Rowset1 = &Row0.GetRowset(Scroll.);
&Rowset1.ShowAllRows();