public decimal CalculateDiscount() { DiscountDA discount = new DiscountDA(); List <string> cakeNames = new List <string>(); List <decimal> cakeDiscount = new List <decimal>(); cakeNames = discount.getDiscountCakeName(); //get discount cakes from DA -working? -b cakeDiscount = discount.getDiscountCakeAmount(); //get discount amounts from DA -working? -b //accumulator for amount of discounts for all cakes decimal amountOfDiscount = 0; for (int x = 0; x < CartList.Count; x++)//for each item in the cart { //need to loop through the cakeNames list to see if selectedCakeName matches any of them string selectedCakeName = CartList.GetNameOfCake(x); int counter = 0; while (counter < cakeNames.Count) { if (selectedCakeName == cakeNames[counter]) //if the cake names match { //get the discount amount out of the list decimal discountAmount = cakeDiscount[counter]; //set new cake price with discount amountOfDiscount += CartList.ApplyCakeDiscount(discountAmount, x); //exit loop if it matches and test the next cake counter = cakeNames.Count; } else { counter++; } } } //int quantity = CartList.GetQuantity(); //Subtotal = 0; //Subtotal = CartList.GetSubtotal(); return(amountOfDiscount); }