dBASE III Update query slow for 1000 entries

how to run chain update command on dbase i'm using code below but performance is very slow. is there any way to update using sp's.

private static void UpdateRdTable(string rdTableName, List Data) { // Write to RD database

        var oledbConnection = new OleDbConnection(OleDbConnectionString);

        try
        {
            var date =  DateTime.Today.ToString("MM/dd/yyyy");
            var time = DateTime.Now.ToString("HH:mm:ss");
            oledbConnection.Open();

            foreach (var oledbcommand in Data
            .Select(series => " UPDATE " + rdTableName + " SET " +
                                " CRNT_RDN     = " + series.CRNT_RDN + "," +
                                " MON_CHARGE   = " + series.MON_CHARGE + "," +
                                " CHRGD_AM     = " + series.CHRGD_AM + "," +
                                " CONSUM       = " + series.CONSUM + "," +
                                " RDNG_COD     = '" + series.RDNG_COD + "'," +
                                " ERR_CODE     = '" + series.ERR_CODE + "'," +
                                " SYSTEM_ID    = 'DEO11'," +
                                " USER_ID      = 'REV5', " +
                                " LOGIN_DATE   = '" + date + "'," +
                                " LOGIN_TIME   = '" + time + "' " +
                                " WHERE " +
                                " TRIM(MET_NUM)    = '" + series.MET_NUM + "' AND " +
                                " ACCT_NUM  = '"+ series.ACCT_NUM +"';")
            .Select(commandText => new OleDbCommand(commandText, oledbConnection))){
            oledbcommand.ExecuteNonQuery();
            oledbcommand.Dispose();
            }                
            oledbConnection.Close();
        }
        catch (Exception e)
        {
            oledbConnection.Close();
            MessageBox.Show(@"Error : SqLiteExporter [428] " + e.Message);
        }          
    }

thanks