HtmlInputRadioButton.OnServerChange Method

Raises the ServerChange event. This allows you to create a custom event handler when the event is raised.

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

protected:
virtual void OnServerChange (
	EventArgs^ e
)
protected void OnServerChange (
	EventArgs e
)
protected function OnServerChange (
	e : EventArgs
)
Not applicable.

Parameters

e

A System.EventArgs that contains the event data.

The ServerChange event is raised when the Checked property of the HtmlInputRadioButton control changes values between posts to the server. This allows you to create a custom event handler that performs a specific set of instructions (such as data validation) when the event is raised.

NoteNote:

The control must have view state enabled for the ServerChange event to work correctly. To enable view state for all controls on the Web Forms page, set the Page.EnableViewState property to true. You can also enable view state for an individual control by setting the Control.EnableViewState property to true.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The OnServerChange 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 OnServerChange in a derived class, be sure to call the base class's OnServerChange method so that registered delegates receive the event.

The following code example demonstrates how to specify and code a handler for the ServerChange event. The custom event handler updates a label on the Web page to display the value of the selected radio button.

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

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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