using System;

using System.Linq;

using System.Xml;                   

using System.Xml.Linq;

using System.Collections; 

using System.Collections.Generic;

using System.Data;

using System.Data.DataSetExtensions;

using System.Data.Linq;

using System.Text;

using System.Text.RegularExpressions;

using System.Xml.Serialization; 

using System.IO;

using System.Globalization;

using System.Diagnostics;

public class Program

{

    public static void Main()

    {

        DataTable dt = new DataTable();

        dt.Columns.Add("code", typeof(int));

        dt.Columns.Add("price", typeof(int));

        dt.Rows.Add(new object[]{1,101});

        dt.Rows.Add(new object[]{2,102});

        dt.Rows.Add(new object[]{3,103});

        dt.Rows.Add(new object[]{4,104});

        var rows = dt.AsEnumerable()

                     .Select(r=> string.Format("[{0}]", string.Join(",", r.ItemArray)));

        var output = string.Format("[{0}]", string.Join(",", rows.ToArray()));

​

    }

}