เรียกข้อมูลจาก DataSet มีวิธีที่เร็วกว่านี้หรือไม่ครับ

public string getSub(string goalId)
    {
        string strHtml = string.Empty;
        string sqlCnt = string.Empty;

        sqlCnt += "SELECT DISTINCT pp.goalId, COUNT(DISTINCT goodsId) AS goodsCnt, sum(summh) AS sumMhs ";
        sqlCnt += " FROM (SELECT * FROM [GoodsManhours2Sum_V] WHERE oprYear=" + oprYear + " AND oprMonth<=" + oprMonth + ") AS pp ";
        sqlCnt += " WHERE goalId=" + goalId + " GROUP BY goalId";

        SqlConnection myConnection = new SqlConnection(strConn);
        myConnection.Open();

        SqlCommand myCommand = new SqlCommand(sqlCnt, myConnection);
        SqlDataReader myDataReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection);

        if (myDataReader.HasRows)
        {
            while (myDataReader.Read())
            {
                string sGoodsCnt = myDataReader["goodsCnt"].ToString();
                string sSumMhs = myDataReader["sumMhs"].ToString();
                strHtml += "<td class='rowSub' style='width:80px;'>" + sGoodsCnt + "</td>";
                strHtml += "<td class='rowSub' style='width:80px;'>" + sSumMhs + "</td>";
            }
        }
        else
        {
            strHtml += "<td class='rowSub'>-</td>";
            strHtml += "<td class='rowSub'>-</td>";
        }

        myDataReader.Close();
        myConnection.Close();

        return strHtml;
    }