TreeList.ShowingEditor Event

Fires before the TreeList is switched to edit mode.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v21.1.dll


public event CancelEventHandler ShowingEditor

Event Data

The ShowingEditor event's data class is CancelEventArgs. The following properties provide information specific to this event:

Property Description
Cancel Gets or sets a value indicating whether the event should be canceled.


Handle the ShowingEditor event to perform custom actions when a cell editor is about to be displayed.

For example, you can prevent the editor form being shown for a particular cell only. Use the TreeList.FocusedColumn and TreeList.FocusedNode properties to identify the focused cell for which the editor is about to be shown. Set the Cancel parameter to true to cancel the action.


The ShowingEditor event does not fire for cells within the Auto Filter Row.


You can disable the TreeList.OptionsBehavior.Editable option to prohibit users to edit all cells in the control. Use the TreeListColumn.OptionsColumn.ReadOnly option to allow users to invoke the editor to copy a value, but not to edit. The TreeListColumn.OptionsColumn.AllowEdit option allows you to prohibit users from invoking editors (even just to copy a value).

See Also