public List <tongket> searchTK(String search)
        {
            List <tongket> list  = new List <tongket>();
            String         query = "Select * from tongket where masv='" + search + "'";

            try {
                SqlCommand    cmd    = new SqlCommand(query, getConnection());
                SqlDataReader reader = cmd.ExecuteReader();
                while (reader.Read())
                {
                    tongket b = new tongket();
                    b.tongKetIDataReader(reader);
                    list.Add(b);
                }
                reader.Close();
            } catch (Exception e) {
            }
            return(list);
        }
        public List <tongket> getDsTongKet()
        {
            List <tongket> list = new List <tongket>();
            String         query;

            query = "Select * from tongket ";

            try {
                SqlCommand    cmd    = new SqlCommand(query, getConnection());
                SqlDataReader reader = cmd.ExecuteReader();
                while (reader.Read())
                {
                    tongket l = new tongket();
                    l.tongKetIDataReader(reader);
                    list.Add(l);
                }
                reader.Close();
            } catch (Exception e) {
            }
            return(list);
        }