UpdatePanel::OnPreRender Method (EventArgs^)
.NET Framework (current version)
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.
.NET Framework
Available since 3.5
Available since 3.5
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