TreeView.TreeNodeCheckChanged Event

Note: This event is new in the .NET Framework version 2.0.

Occurs when a check box in the TreeView control changes state between posts to the server.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public:
event TreeNodeEventHandler^ TreeNodeCheckChanged {
	void add (TreeNodeEventHandler^ value);
	void remove (TreeNodeEventHandler^ value);
}
/** @event */
public void add_TreeNodeCheckChanged (TreeNodeEventHandler value)

/** @event */
public void remove_TreeNodeCheckChanged (TreeNodeEventHandler value)

JScript supports the use of events, but not the declaration of new ones.

The TreeNodeCheckChanged event is raised when a check box in the TreeView control changes state between posts to the server. This allows you to provide an event-handling method that performs a custom routine, such as updating a database or the displayed content, whenever this event occurs.

Even though the TreeNodeCheckChanged event is fired on post back, changing a check box does not cause a post back.

For more information about handling events, see Consuming Events.

The following code example demonstrates how to use the TreeNodeCheckChanged event to update a Label control when the check boxes of the TreeView control change state between posts to the server.

No code example is currently available or this language may not be supported.

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.

.NET Framework

Supported in: 2.0

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