private void RemoveDiscount(string salesName, double qty, double discount)
{
var td = new TestDiscount(salesName, qty, discount);
var d = _cartDiscounts.Find(t => t.Title == td.Title && t.Discount == td.Discount);
d.Quantity -= td.Quantity;
}
private void AddDiscount(string salesName, double qty, double discount)
{
var td = new TestDiscount(salesName, qty, discount);
for (int i = 0; i < _cartDiscounts.Count; i++)
{
if (_cartDiscounts[i].Title == td.Title &&
_cartDiscounts[i].Discount == td.Discount)
{
_cartDiscounts[i].Quantity += td.Quantity;
return;
}
}
_cartDiscounts.Add(td);
}