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CheckBox::OnCheckedChanged Method

Raises the CheckedChanged event of the CheckBox control. This allows you to handle the event directly.

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

protected:
virtual void OnCheckedChanged(
	EventArgs^ e
)

Parameters

e
Type: System::EventArgs

A System::EventArgs that contains the event data.

The CheckedChanged event is raised when the value of the Checked property changes between posts to the server.

NoteNote

A CheckBox control must persist some values between posts to the server for this event to work correctly. Be sure that view state is enabled for this control.

Raising an event invokes the event handler through a delegate. For more information, see How to: Consume Events in a Web Forms Application

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

The following example demonstrates how to specify and code the handler for the CheckedChanged event of a CheckBox control.

NoteNote

The following code samples use the single-file code model and may not work correctly if copied directly into a code-behind file. Each code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.

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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, 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.

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