internal static CardAccount TakeCardAccountByCardNumber(string cardNumber,ATMdbEntities db)
{
var account = db.CardAccounts.Where(a => a.CardNumber == cardNumber).First();
if (account == null)
{
throw new ArgumentException("Invalid account !");
}
return account;
}
internal static CardAccount TakeCardAccountByCardNumber(string cardNumber, ATMdbEntities db)
{
var account = db.CardAccounts.Where(a => a.CardNumber == cardNumber).First();
if (account == null)
{
throw new ArgumentException("Invalid account !");
}
return(account);
}
static void Main(string[] args)
{
var db = new ATMdbEntities();
using (var tran = db.Database.BeginTransaction(IsolationLevel.RepeatableRead))
{
try
{
Console.WriteLine("Please enter a card number");
string number = "1234567890";
Console.WriteLine("Please enter a card pin");
string pin = "2222";
Console.WriteLine("Please enter ammount of money to withdraw");
decimal withdrawMoney = decimal.Parse(Console.ReadLine());
var account = Validation.TakeCardAccountByCardNumber(number, db);
Validation.ValidatePin(account, pin);
Validation.ValidateWithdrawMoney(account, withdrawMoney);
db.TransactionHistories.Add(new TransactionHistory()
{
CardNumber = account.CardNumber,
Amount = account.CardCash,
TransactionDate = DateTime.Now
});
account.CardCash -= withdrawMoney;
db.SaveChanges();
Console.WriteLine(account.CardCash);
}
catch (Exception e)
{
Console.WriteLine(e);
tran.Rollback();
}
tran.Commit();
}
}
