How to suppress refreshing data in GridDataBoundGrid cells

I use a DataSet->DataView->GridDataBoundGrid set of components. My problem is that I use DataSet cells as working variables, like this: rowOut["Manpower"]=(double)rowOut["Manpower"]+1; I don't want to see intermediate results. I successfully employed this approach with Windows Forms DataGrid and performance was acceptable, but with GridDataBoundGrid I see the whole thing with naked eye. I tried to disable visual output with BeginUpdate()/EndUpdate() but succeeded only in killing final results as well as intermediate results, though performance was good. Is there a solution to this problem? Best regards, Alexey

In addition to Begin\EndUpdate, also call grid.Binder.SuspendingBinding/grid.Binder.ResumeBinding to see if that helps. And, after all the work is done, call grid.Refresh or grid.RefreshRange to repaint what needs to be repainted.