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);
}