public BankService(Holder.Holder holder) { if (holder.Equals(null)) { throw new ArgumentException("Holder can't be null!"); } _holder = holder; }
private void CheckNumbers(decimal sum, BankAccount.BankAccount bankAccount, Holder.Holder holder) { if (sum <= 0) { throw new ArgumentException("Sum can't be less or equal zero!"); } if (holder.Equals(null)) { throw new ArgumentException("Holder can't be null!"); } CheckAccount(bankAccount); }