System.TypeLoadException.TypeLoadException C# (CSharp) Method

        private TypeLoadException(String className,
                                  String assemblyName,
                                  String messageArg,
                                  int    resourceId)
        : base(null)
        {
            SetErrorCode(__HResults.COR_E_TYPELOAD);
            ClassName  = className;
            AssemblyName = assemblyName;
            MessageArg = messageArg;
            ResourceId = resourceId;

            // Set the _message field eagerly; debuggers look at this field to 
            // display error info. They don't call the Message property.
            SetMessageField();   
        }