Adds an event handler for the "beforeLabelEdit" event notification. The beforeLabelEdit event is fired when the user attempts to begin changing the text of a node in the TreeView. The event handler can cancel this event, in which case the user won't be allowed to edit the text. This event can be used to prevent the user from editing specific nodes in the TreeView. If the labelEdit property of the TreeView is false, this event will not be fired, and all user attempts to edit node labels will be automatically rejected.
[Visual Basic] Public Sub AddOnBeforeLabelEdit( _ ByVal handler As NodeLabelEditEventHandler _ ) [C#] public void AddOnBeforeLabelEdit( NodeLabelEditEventHandler handler ); [C++] public: void AddOnBeforeLabelEdit( NodeLabelEditEventHandler* handler ); [JScript] public function AddOnBeforeLabelEdit( handler : NodeLabelEditEventHandler );
TreeView Class | TreeView Members | System.WinForms Namespace