public bool expValidate(DateTime transactdate)
{
cardInfoEntities db = new cardInfoEntities();
var data = db.CardInfoes.Where(x => x.expdate > transactdate).SingleOrDefault();
if (data == null)
{
throw new ArgumentException("Invalid date");
}
else
{
return(true);
}
}
public bool cvvValidate(int cvv)
{
cardInfoEntities db = new cardInfoEntities();
var data = db.CardInfoes.Where(x => x.cvvno == cvv).SingleOrDefault();
if (data == null)
{
throw new ArgumentException("Invalid cvv");
}
else
{
return(true);
}
}
public int transaction(int transactamt)
{
cardInfoEntities db = new cardInfoEntities();
CardInfo ci = new CardInfo();
var bal = ci.balance;
var data = db.CardInfoes.Where(x => x.balance > transactamt);
if (data == null)
{
throw new ArgumentException("Balance too low");
}
else
{
var olddata = db.CardInfoes.Where(x => x.balance > transactamt).SingleOrDefault();
ci.balance = ci.balance - transactamt;
olddata.balance = ci.balance;
Console.WriteLine("Balance sufficient for the transanction .Balance now is: " + ci.balance);
var res = db.SaveChanges();
return(Convert.ToInt16(ci.balance));
}
}