public void CreateUser(string username, string password, string fullName, string address, string phoneNumber) { int?userTypeId = userTypeRep.GetUserTypeId(); if (userTypeId != null) { userRep.Create(new User { Username = username, Password = password, UserTypeId = userTypeId.Value, FullName = fullName, Address = address, PhoneNumber = phoneNumber }); } else { throw new Exception("add userType for user in db"); } }