TreeView.OnSelectedNodeChanged Method
Raises the SelectedNodeChanged event of the TreeView control.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in System.Web.dll)
Parameters
- e
- Type: System.EventArgs
An System.EventArgs that contains event data.
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 |
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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, see Consuming 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 InheritorsWhen overriding the OnSelectedNodeChanged method in a derived class, be sure to call the OnSelectedNodeChanged method for the base class so that registered delegates receive the event.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
