public User selectUser(User u) { // use the FormsAuth HashPwd method to turn the string into an md5 hash. u.password = FormsAuthentication.HashPasswordForStoringInConfigFile(u.password, "MD5"); var result = DALuser.selectUser(u); if (result == null) { // if no user was found, throw new exception and end the login process throw new Exception("It appears your credentials were not correct. Please try again."); } else { // otherwise return the user return(result); } }