public void Create(FormCollection input)
        {
            using (DataContext db = new DataContext())
            {
                // действия по добавлению
                int      id_carrier  = Int32.Parse(input["Parcel.Carrier.Name"]);
                string   track       = input["Parcel.Track_number"];
                string   invoice_num = input["Invoice_number"];
                DateTime date        = DateTime.Parse(input["Date"]);
                string   responsible = input["Responsible"];

                var        carrier    = db.Carriers.FirstOrDefault(c => c.Id == id_carrier);
                RootObject novaPochta = NP.GetDataParcel(track);
                Parcel     parcel     = new Parcel()
                {
                    Track_number = track, Carrier = carrier
                };
                if (parcel.Carrier.Name == "Nova Poshta")
                {
                    parcel = Parcel.RefreshParcel(parcel, novaPochta);
                }


                db.Parcels.Add(parcel);
                db.SaveChanges();
                db.Invoices.Add(new Invoice()
                {
                    Invoice_number = invoice_num, Date = date, Responsible = responsible, Parcel = parcel
                });
                db.SaveChanges();
            }
        }