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ExtenderControl Class

Provides an abstract base class for an extender control.

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

[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public abstract class ExtenderControl : Control, 
	IExtenderControl
<asp:ExtenderControl />

The ExtenderControl class enables you to programmatically add AJAX functionality to an ASP.NET server control. The ExtenderControl inherits from the Control class and implements the IExtenderControl interface. The Control class defines the properties, methods, and events that are shared by all ASP.NET server controls. The IExtenderControl interface is an abstract class, which you cannot instantiate directly. Instead, you create a derived type.

The following example shows how to use the ExtenderControl class. For a tutorial related to this example, see Creating an Extender Control to Associate a Client Behavior with a Web Server Control.

System.Object
  System.Web.UI.Control
    System.Web.UI.ExtenderControl

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 3.5

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