public static int GetID_ByTen(string MaDe)
        {
            int            id     = 0;
            List <MaDeThi> List   = new List <MaDeThi>();
            string         querry = "select * from MaDeThi  where Made = '" + MaDe + "'";
            DataTable      Table  = new DataTable();

            Table = DataProvider.instanse.Executequerry(querry);
            if (Table.Rows.Count > 0)
            {
                foreach (DataRow item in Table.Rows)
                {
                    MaDeThi BTDoc = new MaDeThi(item);
                    id = BTDoc.ID_MaDe;
                    List.Add(BTDoc);
                }
            }
            return(id);
        }
        public static List <MaDeThi> GetListMaDeThi()
        {
            string         querry = "Select * From MaDeThi";
            List <MaDeThi> List   = new List <MaDeThi>();
            DataTable      DT     = DataProvider.instanse.Executequerry(querry);

            if (DT.Rows.Count == 0)
            {
                return(null);
            }
            else
            {
                foreach (DataRow item in DT.Rows)
                {
                    MaDeThi made = new MaDeThi(item);
                    List.Add(made);
                }
            }
            return(List);
        }
        public static int GetIdCuoi()
        {
            int       id     = 0;
            string    querry = "Select * From MaDeThi";
            DataTable DT     = DataProvider.instanse.Executequerry(querry);

            if (DT.Rows.Count == 0)
            {
                return(0);
            }
            else
            {
                foreach (DataRow item in DT.Rows)
                {
                    MaDeThi made = new MaDeThi(item);
                    id = made.ID_MaDe;
                }
            }
            return(id);
        }