public string CreateCreditCardByAccountId(int bankAccountId) { string ret = "Card was not created"; Random random = new Random(); int password = random.Next(1000, 9999); int cardNumber = random.Next(10000000, 99999999); if (_creditCardRepository.InsertCreditCardByBankAccountId(bankAccountId, cardNumber, CalculateMD5Hash(password.ToString())) > 0) { ret = $"Card was created, password is {password}"; } return(ret); }