This event fires when the user clicks an edit button on a cell. Typically, this event is used to pop up a custom editor for the cell (for example, dialogs for selecting colors, dates, files, pictures, and so on).

By default, cell edit buttons are displayed on the right side of a cell, with an ellipsis caption ("..."). They are similar to the buttons displayed in the PropertyGrid control, next to Image properties. You may customize the button's appearance by assigning a picture to the CellButtonImage property.

To create an edit button on a cell, you must set the AllowEditing property to true and set the ComboList property (on the grid or on specific columns) to an ellipsis ("...").