GDBG undo/redo problem

[Bob Wis]

We are currently using the GridDataBoundGrid with the Undo/Redo feature. The Undo/Redo only seems to work on every other change.

Here are the steps:

1) User makes change to cell 1,1 and hits tab
2) User makes change to cell and hits tab
3) repeat several times
4) hit ctrl-z to undo everything
5) every other change does not get undone. It appears that the undo is not always committed.

Has anyone encountered this before?

Bob

[Administrator]

Every other undo is probably undoing a selection command which does not really show up in the UI.

Try this. First, set

this.gridDataBoundGrid1.Binder.DirectSaveCellInfo = true;

to avoid problem of the grid caching changes until you leave the row.

If you want to transparently process the selection commands so your user sees a change with each ctlZ, in the undo menu handler (which has a ctlZ hotkey), use code like:

private void menuItem2_Click(object sender, System.EventArgs e)
{
	if(this.gridDataBoundGrid1.Model.CommandStack.UndoStack.Count > 0)
		this.gridDataBoundGrid1.Model.CommandStack.Undo();

	object o = null;
	if(this.gridDataBoundGrid1.Model.CommandStack.UndoStack.Count > 0)
		o = this.gridDataBoundGrid1.Model.CommandStack.UndoStack.Peek();
	while(o is GridSelectionStateCommand)
	{
		this.gridDataBoundGrid1.Model.CommandStack.Undo();
		if(this.gridDataBoundGrid1.Model.CommandStack.UndoStack.Count > 0)
			o = this.gridDataBoundGrid1.Model.CommandStack.UndoStack.Peek();
		else
			o = null;
	}
}