Well, as you noticed, you can't disable the whole grid and still use the scrollbars. So that leaves you with the option of disabling parts of the grid, instead.

So how about this:

            foreach (UltraGridBand band in this.ultraGrid1.DisplayLayout.Bands)
            {
                foreach (UltraGridColumn column in band.Columns)
                {                   
                    column.CellActivation = Activation.Disabled;
                }
            }

Mike but that will not make grid disabled look as Enabled = False.