public void AddTicketDiscount(DiscountType type, decimal amount, int userId)
{
var c = Discounts.SingleOrDefault(x => x.DiscountType == (int)type);
if (c == null)
{
c = new Discount { DiscountType = (int)type, Amount = amount };
Discounts.Add(c);
}
if (amount == 0) Discounts.Remove(c);
c.UserId = userId;
c.Amount = amount;
}
public DiscountViewModel(Discount model)
{
Model = model;
}