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TreeView.OnSelectedNodeChanged(EventArgs) Method

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Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

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 -> unit
Protected Overridable Sub OnSelectedNodeChanged (e As EventArgs)

Parameters

e
EventArgs

An EventArgs that contains event data.

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.

Applies to

See also