This class is an abstract base class. This class is never used instantiated; instead, classes that extend it and represent access to a particular type of isolated storage are used.

The scope of the declaration that is allowed depends on the System.Security.Permissions.SecurityAction that is used.

The security information declared by a security attribute is stored in the metadata of the attribute target and is accessed by the system at run time. Security attributes are used only for declarative security. For imperative security, use the corresponding permission class.