public ActionResult DetailsCustomer(DetailsCustomerModel model)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    var newContext = context.Orders.ToList();

                    //Количество продаж по пользователю
                    var qyerySumOrdersCustomer = newContext
                                                 .Where(emp => emp.Customers.FirstName.Trim() == model.FirstName)
                                                 .Select(emp => emp.CountProduct).Sum();


                    var list =
                        (from myList in newContext
                         where
                         myList.Customers.Id == model.Id ||
                         myList.Customers.FirstName.Trim().ToLower() == model.FirstName.ToLower() ||
                         myList.Customers.LastName.Trim().ToLower() == model.LastName.ToLower()

                         select myList).ToList();

                    ViewBag.SummOrdersCustomer = qyerySumOrdersCustomer;

                    return(View(list));
                }
                return(View());
            }
            catch (Exception exp)
            {
                ViewBag.Error = exp.Message;
                return(View("Error"));
            }
        }
 public ActionResult _DetailsCustomer(DetailsCustomerModel model)
 {
     return(PartialView("_DetailsCustomer"));
 }