public HT_Nhom_Nguoi_Dung_Chi_Tiet Lay(int Ma_Nhom_Nguoi_Dung)
        {
            using (SqlConnection myConnection = new SqlConnection(ConnectionString))
            {
                using (SqlCommand myCommand = new SqlCommand("HT_Nhom_Nguoi_Dung_Lay", myConnection))
                {
                    myCommand.CommandType = CommandType.StoredProcedure;

                    SqlParameter pMa_Nhom_Nguoi_Dung = new SqlParameter("@Ma_Nhom_Nguoi_Dung", SqlDbType.Int, 4);
                    pMa_Nhom_Nguoi_Dung.Value = Ma_Nhom_Nguoi_Dung;
                    myCommand.Parameters.Add(pMa_Nhom_Nguoi_Dung);

                    SqlParameter pTen_Nhom_Nguoi_Dung = new SqlParameter("@Ten_Nhom_Nguoi_Dung", SqlDbType.NVarChar, 250);
                    pTen_Nhom_Nguoi_Dung.Direction = ParameterDirection.Output;
                    myCommand.Parameters.Add(pTen_Nhom_Nguoi_Dung);

                    SqlParameter pSTT = new SqlParameter("@STT", SqlDbType.Int, 4);
                    pSTT.Direction = ParameterDirection.Output;
                    myCommand.Parameters.Add(pSTT);


                    myConnection.Open();
                    myCommand.ExecuteNonQuery();


                    HT_Nhom_Nguoi_Dung_Chi_Tiet myHT_Nhom_Nguoi_Dung_Chi_Tiet = new HT_Nhom_Nguoi_Dung_Chi_Tiet();
                    myHT_Nhom_Nguoi_Dung_Chi_Tiet.Ma_Nhom_Nguoi_Dung  = Ma_Nhom_Nguoi_Dung;
                    myHT_Nhom_Nguoi_Dung_Chi_Tiet.Ten_Nhom_Nguoi_Dung = (string)pTen_Nhom_Nguoi_Dung.Value;
                    myHT_Nhom_Nguoi_Dung_Chi_Tiet.STT = (int)pSTT.Value;
                    return(myHT_Nhom_Nguoi_Dung_Chi_Tiet);
                }
            }
        }
        public void Cap_Nhat(HT_Nhom_Nguoi_Dung_Chi_Tiet myHT_Nhom_Nguoi_Dung_Chi_Tiet)
        {
            using (SqlConnection myConnection = new SqlConnection(ConnectionString))
            {
                using (SqlCommand myCommand = new SqlCommand("HT_Nhom_Nguoi_Dung_Cap_Nhat", myConnection))
                {
                    myCommand.CommandType = CommandType.StoredProcedure;

                    SqlParameter pMa_Nhom_Nguoi_Dung = new SqlParameter("@Ma_Nhom_Nguoi_Dung", SqlDbType.Int, 4);
                    pMa_Nhom_Nguoi_Dung.Value = myHT_Nhom_Nguoi_Dung_Chi_Tiet.Ma_Nhom_Nguoi_Dung;
                    myCommand.Parameters.Add(pMa_Nhom_Nguoi_Dung);

                    SqlParameter pTen_Nhom_Nguoi_Dung = new SqlParameter("@Ten_Nhom_Nguoi_Dung", SqlDbType.NVarChar, 250);
                    pTen_Nhom_Nguoi_Dung.Value = myHT_Nhom_Nguoi_Dung_Chi_Tiet.Ten_Nhom_Nguoi_Dung;
                    myCommand.Parameters.Add(pTen_Nhom_Nguoi_Dung);

                    SqlParameter pSTT = new SqlParameter("@STT", SqlDbType.Int, 4);
                    pSTT.Value = myHT_Nhom_Nguoi_Dung_Chi_Tiet.STT;
                    myCommand.Parameters.Add(pSTT);


                    myConnection.Open();
                    myCommand.ExecuteNonQuery();
                }
            }
        }