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)
In JScript, you can handle the events defined by a class, but you cannot define your own.
Not applicable.
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.
Note: