using System;

using System.Data;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

              ""data"": {

                ""Table"": [

                  {

                    ""FirmId"": 67,

                    ""FirmName"": ""FURNITURE ELECTRONICS & HOME APPLIANCES "",

                    ""BranchId"": 44317,

                    ""BranchName"": "" PERINTHALMANNA"",

                    ""Address"": ""PERINTHALMANNA"",

                    ""Contact"": ""123456"",

                    ""HelpLine"": ""454656"",

                    ""MailId"": ""qwerty@GMAIL.COM"",

                    ""GSTINNo"": ""wewrerw"",

                    ""BranchRegNo"": ""08/2019"",

                    ""PAN"": ""rwerewr"",

                    ""OtherNotes"": """",

                    ""State"": ""KERALA"",

                    ""StateCode"": ""32"",

                    ""Delivery"": ""Y""

                  }

                ]

              }

            }";

        DataSet dataSet = JObject.Parse(json)["data"].ToObject<DataSet>();

        DataTable table = dataSet.Tables["Table"];

        foreach (DataRow row in table.Rows)

        {

            foreach (DataColumn col in table.Columns)

            {

                Console.WriteLine(col.ColumnName + ": " + row[col]);

            }

        }

    }

}