C# equivalent of PrivilegedAction
<p>What is C# equivalent of <a href="http://docs.oracle.com/javase/1.4.2/docs/api/java/security/PrivilegedAction.html" rel="nofollow">PrivilegedAction</a> and <a href="http://docs.oracle.com/javase/1.4.2/docs/api/java/security/PrivilegedExceptionAction.html" rel="nofollow">PrivilegedExceptionAction</a> class of Java?</p>
