Certain types of cell may require sophisticated editors other than text boxes or choice lists. For example, if a cell contains a file name or a color, it should be edited with a dialog box. In these cases, set the ColComboList property to an ellipsis ("…"). The control will display a button next to the cell and will fire the CellButtonClick event when the user clicks on it. You can trap the event, show the dialog box, and update the cell's contents with the user's selection.