Used to specify which configuration file is to be represented by the Configuration object.
Assembly: System.Configuration (in System.Configuration.dll)
Application configuration files are in the same directory as the application and have the same name, but with a .config extension. For example, the configuration file for C:\System\Public.exe is C:\System\Public.exe.config.
Applications use a global configuration that applies to all users, separate configurations that apply to individual users, and configurations that apply to roaming users.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.