i am not getting asc order(i want val_name asc order but i am getting like dis)

public DataSet GetContractTerm(string prodKey, int propLinkID, OleDbConnection conn)
        {
            string sQuery;
            string Prod_Friendly_Name = string.Empty;
   sQuery = "select distinct VAL_ID, VAL_NAME from PPSR_OWNER.ppsr_q2o_att_data_v  where attribute_name = 'CONTRACT TERM'   ORDER BY VAL_NAME ASC";           
 DataSet dsContractTerm = new DataSet();

            try
            {
                dsContractTerm = CCBusiness.Utility.OracleHelperUtility.ExecuteDataset(conn, sQuery);
            }
            catch (Exception e)
            {
                CCBusiness.Utility.OracleHelperUtility.LogPPSRError(System.Web.HttpContext.Current, e);
                throw e;
            }
            return dsContractTerm;

}

private string GetContractName(DataSet ds, string contractID)
        {
            string contractname = string.Empty;

            for (int contract = 0; contract < ds.Tables[0].Rows.Count; contract++)
            {
                if (contractID == ds.Tables[0].Rows[contract]["VAL_ID"].ToString())
                {
                    contractname = ds.Tables[0].Rows[contract]["VAL_NAME"].ToString();
                    break;
                }

            }
            return contractname;
        }