When you double-click a grid cell, the first mouse click is processed by a grid. In response to this mouse click, it activates an in-place editor in a focused cell. Thus, the second mouse click is handled by this editor. To make the GridControl.DoubleClick event fire in your scenario, it is necessary to change a way by using which an editor is activated. Set the GridView.OptionsBehavior.EditorShowMode property to Click.