Assembly: System.Configuration (in system.configuration.dll)
This is the type that is returned when the design-time API reads in a section that is not registered in the <configSections> section. This type is also returned when the type of registered section does not inherit from ConfigurationSection, as with sections that use the ASP.NET 1.0 or 1.1 IConfigurationSectionHandler type.
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.