public static Guid?AddMessage(int _MessageActionTypeID, string _MessageSubject, string _MessageText, int _MessageTo, int _ToContactType, int _MessageFrom, int _FromContactType, string _EmailAddressTo) { Guid?MessageGUID = new Guid?(); using (MessagesDataContext dc = new MessagesDataContext()) { dc.S1_Messages_AddMessage(_MessageActionTypeID, _MessageSubject, _MessageText, _MessageTo, _ToContactType, _MessageFrom, _FromContactType, _EmailAddressTo, ref MessageGUID); } return(MessageGUID); }