.NET Framework Standard Library Annotated Reference, Volume 1: Base Class Library and Extended Numerics Library

Type Summary

						public class SystemException : Exception
 {
   // Constructors
      public SystemException ();
      public SystemException (string message);
      public SystemException (string message,
                              Exception innerException);
MS CF
						protected SystemException (SerializationInfo info,
                                 StreamingContext context);
 }

JR You should not define new exception classes derived from SystemException; use Exception instead. In addition, you should not write code that catches SystemException.