Not able to get correct GetChanges() when I use F3 and F4 keys in gridGroupingControl

[prathima venkobachar]

Hi,

I am using gridGroupingControl.I am using F3 and F4 keys to select and deslect the records in the grid.
I select 5 rows using f3 key.On button click I call GetChnages().It gives me row count as 4.
I am sending the application replicating the problem.

Thanks,
Prathima

[prathima venkobachar]

GGC_SelectCheckBox_2948.zip

[Administrator]

Try calling BeginEdit on the record before you change it and EndEdit on the record after you change it. You would do this for both F3 and F4.

r.ParentRecord.BeginEdit();
r.ParentRecord.SetValue("boolCol", true);
r.ParentRecord.EndEdit();

[prathima venkobachar]

Thanks for the reply.This works fine.
But my concern is BeginEdit() and EndEdit() will take more time.
If I had selected 1000 recs and do F3 and F4 then the application will be very slow.
Any solution for this..?

Thanks,
Prathima

[Administrator]

You can try making the changes directly on the underlying data source and not go through the grid to make the changes. This way, you will avoid all the grid events that accompany changes.

this.gridGroupingControl1.BeginUpdate();
foreach(GridRangeInfo range in this.gridGroupingControl1.TableModel.Selections.Ranges) {
	for(int i = range.Top; i <= range.Bottom; ++ i) {
		GridRecordRow r = this.gridGroupingControl1.Table.DisplayElements[i] as GridRecordRow;
		int index = this.gridGroupingControl1.Table.Records.IndexOf(r.ParentRecord);
		dt.Rows[index]["boolCol"] = true;
	}
}
this.gridGroupingControl1.EndUpdate(true);
e.Inner.Handled = true;