Page.RegisterRequiresControlState Method
.NET Framework 2.0
Registers a control as one whose control state must be persisted.
Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
| Exception type | Condition |
|---|---|
|
The control to register is a null reference (Nothing in Visual Basic). | |
|
The RegisterRequiresControlState method can be called only before or during the PreRender event. |
Custom server controls that use control state must call the RegisterRequiresControlState method on each request because registration for control state is not carried over from request to request during a postback event. It is recommended that registration occur in the Init event.
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