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UpdatePanel::OnPreRender Method
Visual Studio 2010
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 SP1 or later, Windows XP SP3, 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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