Provides access to a configuration file. This type supports the .NET Framework configuration infrastructure and is not intended to be used directly from your code.
Assembly: System (in System.dll)
The file attribute of the <appSettings> section specifies a relative path to an external file that contains custom application-configuration settings. The details provided in the file act as an <appSettings> section in the configuration file. The file is accessed using the class. The file's root element must match the section referring to it.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
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.