public static void updatechitietsddv(ChitietsddvObject chitiet)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            ctsd.suachitietsddv(chitiet);
        }
        public static void deletechitietsddv(ChitietsddvObject chitiet)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            ctsd.xoachitietsddv(chitiet);
        }
        public static void ADDchitietsddv(ChitietsddvObject chitiet)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            ctsd.themchitietsddv(chitiet);
        }
        public static DataTable timctdvbymadv(string madv)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            return(ctsd.timbymadv(madv));
        }
        public static DataTable timctdvbysldv(int soluongdv)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            return(ctsd.timbysoluongdv(soluongdv));
        }
        public static DataTable timctdvbytenkh(string tenkh)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            return(ctsd.timbytenkh(tenkh));
        }
        public static DataTable  getdatachitietdv()
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            return(ctsd.getdatachitietdv());
        }