Assembly: System.Configuration (in system.configuration.dll)
The CallbackValidator class contains the type and delegate necessary to validate an object. The type and delegate are established when an instance of the CallbackValidator class is created. The object to validate is passed as a parameter of the Validate method.
Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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.