public string WithdrawTransaction(Customer customer)
{
string accountNo = customer.AccNo;
bool isAccNoExist = CheckAccNo(accountNo);
if (isAccNoExist)
{
Customer aCustomer = gateway.GetExistAccount(customer);
double balance = aCustomer.Balance;
if (customer.Balance <= balance)
{
var rowAffected = gateway.UpdateWithdraw(customer);
if (rowAffected > 0)
{
return("Withdraw Successfully!");
}
else
{
return("Withdraw Failed!");
}
}
else
{
return("Insufficient Balance");
}
}
else
{
return("This Account doesn't exist!");
}
}