public ActionResult SaveOrder(string invoiceId)
{
var tickets = Session["tickets"] as List <Ticket>;
var order = Session["order"] as Models.Order;
order.SetInvoiceId(invoiceId);
ticketRepository.AddMultiple(tickets);
orderRepository.Add(order);
unitOfWork.Complete();
ClearOrderSession();
return(RedirectToAction("PrintOrderData", "Order", new { Id = order.OrderId }));
}