.NET Framework 4.6 and 4.5
Gets the name of the friend assembly to which all types and type members that are marked with the internal keyword are to be made visible.
Assembly: mscorlib (in mscorlib.dll)
.NET FrameworkSupported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
XNA FrameworkSupported in: 3.0, 2.0, 1.0
.NET for Windows Phone appsSupported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
Portable Class LibrarySupported in: Portable Class Library