public void Withdraw(BankUser bankUser, decimal money,decimal bankWithdrawFeeRate)
{
bankUser.Balance -= (money+money*bankWithdrawFeeRate);
bankUser.LastTransactionTime = DateTime.Now;
}
public void Deposit(BankUser bankUser, decimal money)
{
bankUser.Balance = money;
bankUser.LastTransactionTime = DateTime.Now;
}