ImageButton::OnPreRender Method (EventArgs^)
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 Forms Page Code Model. |
Available since 1.1
