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ScriptManager.RegisterExtenderControl<TExtenderControl> Method

Registers an extender control with the current ScriptManager instance.

Namespace:  System.Web.UI
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

public void RegisterExtenderControl<TExtenderControl>(
	TExtenderControl extenderControl,
	Control targetControl
where TExtenderControl : Control, IExtenderControl

Type Parameters


A control that implements the IExtenderControl interface.


Type: TExtenderControl
The extender control to register.
Type: System.Web.UI.Control
The script control that the extender control extends.


extenderControl is null.

- or -

targetControl is null.

This method is primarily for use by control developers. Call the RegisterExtenderControl<TExtenderControl> method from a custom ASP.NET Ajax extender control during its onInit event handler to register that control with the page. An ASP.NET Ajax extender control must be registered to participate in partial-page rendering.

The RegisterExtenderControl<TExtenderControl> method adds the specified extender control to an internal list of extender controls and the target script controls they extend. This list is processed during the PreRender event.

.NET Framework

Supported in: 4, 3.5

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.