Assembly: mscorlib (in mscorlib.dll)
You cannot create an instance of this class. You must inherit from this class to make use of its functionality.Notes to Inheritors
Derived classes must have only one constructor that takes a SecurityAction as its only parameter.
Windows Phone 8.1, Windows Phone 8, 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.