CheckBox::OnCheckedChanged Method
Raises the CheckedChanged event of the CheckBox control. This allows you to handle the event directly.
Assembly: System.Web (in System.Web.dll)
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.
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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.
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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 Page Code Model. |
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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