TreeView.SelectedNodeChanged Event
Assembly: System.Web (in system.web.dll)
public: event EventHandler^ SelectedNodeChanged { void add (EventHandler^ value); void remove (EventHandler^ value); }
/** @event */ public void add_SelectedNodeChanged (EventHandler value) /** @event */ public void remove_SelectedNodeChanged (EventHandler value)
JScript supports the use of events, but not the declaration of new ones.
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 for a node to specify which event is raised when that node is selected. The following table lists the available options.
| Selection action | Description |
|---|---|
| Toggles the node between expanded and collapsed. Raises the TreeNodeExpanded or TreeNodeCollapsed event, as appropriate. | |
| Raises no events when a node is selected. | |
| Raises the SelectedNodeChanged event when a node is selected. | |
| Raises both the SelectedNodeChanged and TreeNodeExpanded events when a node is selected. Nodes are only expanded, never collapsed. |
Note |
|---|
| The HoverNodeStyle is not rendered for a node with its SelectAction property set to TreeNodeSelectAction.None. |
The SelectedNodeChanged event is fired only on post back when a user clicks a node. The event is not fired if the SelectedNode property is changed programmatically.
For more information about handling events, see Consuming Events.
Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Note