public ActionResult EditOrder(int?orderId)
        {
            var rep       = new OrdersRepository();
            var viewOrder = new Models.CreatingOrderViewModel
            {
                IsNew        = true,
                OrderDate    = DateTime.Now,
                ShippedDate  = DateTime.Now,
                RequiredDate = DateTime.Now
            };
            var customers = rep.GetAllCustomers();
            var employees = rep.GetAllEmployees();

            if (!orderId.HasValue)
            {
                ViewBag.Customers = customers;
                ViewBag.Employees = employees;
                return(PartialView("_EditOrder", viewOrder));
            }

            var order = rep.GetAllOrders(false)
                        .Where(x => x.OrderID == orderId.Value)
                        .FirstOrDefault();

            if (order == null)
            {
                return(RedirectToAction("ErrorMessage", "Home", new { message = Resources.EmptyOrderId }));
            }

            ViewBag.Customers = customers
                                .Where(x => x.CustomerID == order.CustomerID)
                                .Concat(customers.Where(x => x.CustomerID != order.CustomerID));
            ViewBag.Employees = employees
                                .Where(x => x.EmployeeID == order.EmployeeID)
                                .Concat(employees.Where(x => x.EmployeeID != order.EmployeeID));
            Mapper.Initialize(cfg => cfg.CreateMap <DataAccessLayer.Models.Order,
                                                    Models.CreatingOrderViewModel>());
            viewOrder = Mapper.Map <DataAccessLayer.Models.Order,
                                    Models.CreatingOrderViewModel>(order);
            viewOrder.IsNew = false;

            return(PartialView("_EditOrder", viewOrder));
        }