JSON array data format

Question

I have web method in this we method i try to return JSON array and then i use this GetVo in jquery

[WebMethod]

public static string GetVo(DateTime fdate, DateTime tdate, string region)

{

string data2 = "[";

try

{

T1 DB = new T1();

//here is LINQ query which is long so i did not paste

e.g. var rea=from ......... .tolist();

data2 += rea.ToList().Select(x => "['" + x.Name + "'," + x.cnt + "]")

.Aggregate((a, b) => a + "," + b);

data2 += "]";

}

catch (Exception)

{

throw new Exception();

}

return data2;

}

this return me data like this

[['DDSB',39],['DPSB',9],['DSB',26],['MV',35],['PSB',52]]

but i want like this

[["DDSB",39],["DPSB",9],["DSB",26],["MV",35],["PSB",52]]

how i do this

any solution?