You have to subscribe to the DoubleClick on the cell :
foreach( DataCell cell in e.DataRow.Cells )
cell.DoubleClick += new EventHandler(cell_DoubleClick);
The double click is sent to the editor first, so you will get the double click only once into the edit mode. If the GridControl is set to ReadOnly, then the double click is sent to the cell the first time.
Imported from legacy forums. Posted by André (had 3360 views)