public ActionResult Edit(int id, ThongTinSanh thongtinsanh)
        {
            try
            {
                // TODO: Add update logic here

                ThongTinSanh tk = qltc.ThongTinSanhs.Single(d => d.MaSanh == id);

                tk.TenSanh    = thongtinsanh.TenSanh;
                tk.LoaiSanh   = thongtinsanh.LoaiSanh;
                tk.SoLuongBan = thongtinsanh.SoLuongBan;
                tk.DonGia     = thongtinsanh.DonGia;
                tk.GhiChu     = thongtinsanh.GhiChu;
                tk.TrangThai  = thongtinsanh.TrangThai;
                tk.MoTa       = thongtinsanh.MoTa;

                qltc.SubmitChanges();


                return(RedirectToAction("Index"));
            }
            catch
            {
                return(View());
            }
        }
        public ActionResult xulithemsanhtiec(FormCollection fc, HttpPostedFileBase hinh, ThongTinSanh sanhtiec)
        {
            sanhtiec.TenSanh    = fc["tensanh"];
            sanhtiec.SoLuongBan = int.Parse(fc["soban"]);
            sanhtiec.LoaiSanh   = fc["loaisanh"];
            sanhtiec.DonGia     = fc["dongia"];
            sanhtiec.GhiChu     = fc["ghichu"];
            sanhtiec.MoTa       = fc["mota"];
            sanhtiec.Hinh       = hinh.FileName;
            sanhtiec.TrangThai  = fc["trangthai"];

            string dd = Server.MapPath("/Content/hinhanh/anhsanhtiec/" + hinh.FileName);

            hinh.SaveAs(dd);
            qltc.ThongTinSanhs.InsertOnSubmit(sanhtiec);
            qltc.SubmitChanges();

            return(RedirectToAction("Index"));
        }