public string register(RegisterUser regUser) { var userstable = new userController(); var check = userstable.getTable().FirstOrDefault<user>(c => c.user_email.Equals(regUser.email)); if (check != null) { return "Email Already Registered"; } user newUser = new user { user_fname = regUser.fname, user_email = regUser.email, user_sname = regUser.lname, user_password = regUser.password, usertype_id = 2, user_id = userstable.getTable().Count() }; userstable.addRecord(newUser); return "Registered"; }