WebFormsReferenceManager Class

Note: This class is new in the .NET Framework version 2.0.

Provides a base class for accessing the types, directives, and controls in the current Web project document. This class must be inherited.

Namespace: System.Web.UI.Design
Assembly: System.Design (in system.design.dll)

public abstract class WebFormsReferenceManager
public abstract class WebFormsReferenceManager
public abstract class WebFormsReferenceManager

The WebFormsReferenceManager base class is implemented by designer hosts to provide access to types, directives, and user controls defined in a Web project document. A control designer class can use the WebFormsReferenceManager to access the definitions in the current document, and to add a new tag prefix to the current document.

You access the WebFormsReferenceManager services supplied by the designer host through the ReferenceManager property of a WebFormsRootDesigner implementation. The WebFormsRootDesigner implementation can be accessed in two ways:

  • Classes deriving from ControlDesigner can use the RootDesigner property to access a WebFormsRootDesigner implementation supplied by the designer host. The WebFormsReferenceManager implementation is supplied through the ReferenceManager property of RootDesigner property.

  • Other designer classes can access the WebFormsRootDesigner implementation by first obtaining the IDesignerHost services implementation through the designer component's Site, and then calling the GetDesigner method using the designer host RootComponent property.


    WebFormsReferenceManager replaces the obsolete interface IWebFormReferenceManager. Older designer hosts may only support the IWebFormReferenceManager interface implementation. Check that the WebFormsRootDesigner and WebFormsReferenceManager implementations supplied by the designer host are not a null reference (Nothing in Visual Basic) to ensure the designer host implements the WebFormsRootDesigner and WebFormsReferenceManager classes.


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 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0