public ActionResult Edit(int id, BanVeThang sst)
        {
            var e = db.BanVeThangs.SingleOrDefault(x => x.MaGiaoDich == id);

            e.Ngay = sst.Ngay;
            e.MaNhanVienBanVeThang = sst.MaNhanVienBanVeThang;
            e.MaVeThang            = sst.MaVeThang;
            e.SoVePhatRa           = sst.SoVePhatRa;
            e.SoVeThuVe            = sst.SoVeThuVe;
            db.SaveChanges();
            return(RedirectToAction("Index"));
        }
 public ActionResult Create(BanVeThang e)
 {
     db.BanVeThangs.Add(e);
     db.SaveChanges();
     return(RedirectToAction("Index"));
 }