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UpdatePanel::OnPreRender Method
Visual Studio 2008
Raises the PreRender event.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
| Exception | Condition |
|---|---|
| InvalidOperationException | The ChildrenAsTriggers property is set to false, and the UpdateMode property is set to Always. |
The OnPreRender method is used by control developers to extend the functionality of the UpdatePanel control.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
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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