ImageButton::OnPreRender Method
Determines whether the image has been clicked prior to rendering on the client.
Assembly: System.Web (in System.Web.dll)
The OnPreRender method is used primarily by control developers when deriving a custom class from the ImageButton control.
The following code example demonstrates how to override the OnPreRender method so that it always displays a thin border in a custom ImageButton server control.
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The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. The first part of the code sample must be copied into an empty text file that has an .aspx extension. The second part must be in a .cs file (for C#) or a .vb file (for Visual Basic). For more information on the Web Forms code model, see ASP.NET Web Page Code Model. |
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
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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