TreeView.OnSelectedNodeChanged(EventArgs) Method
Definition
Important
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Raises the SelectedNodeChanged event of the TreeView control.
protected:
virtual void OnSelectedNodeChanged(EventArgs ^ e);protected virtual void OnSelectedNodeChanged (EventArgs e);abstract member OnSelectedNodeChanged : EventArgs -> unit
override this.OnSelectedNodeChanged : EventArgs -> unitProtected Overridable Sub OnSelectedNodeChanged (e As EventArgs)Parameters
Remarks
The SelectedNodeChanged event is raised when a node is selected in the TreeView control. This allows you to provide an event-handling method that performs a custom routine, such as updating the displayed content, whenever this event occurs.
You can optionally set the SelectAction property of a node to specify which event is raised when that node is selected.
Note
The HoverNodeStyle is not rendered for a node with its SelectAction property set to TreeNodeSelectAction.None.
Raising an event invokes the event handler through a delegate. For more information about how to handle events, see Handling and Raising Events.
The OnSelectedNodeChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors
When overriding the OnSelectedNodeChanged(EventArgs) method in a derived class, be sure to call the OnSelectedNodeChanged(EventArgs) method for the base class so that registered delegates receive the event.
