using System;

using System.Data;

using System.Dynamic;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

public class Program

{

    public static void Main()

    {

        dynamic expando = new ExpandoObject();

        var expando_as_dictionary = expando as IDictionary<string, object>;

        expando_as_dictionary.Add("SomeProp", 1055);

        expando_as_dictionary.Add("SomeProp 2", "mamma");

        expando.name = "John";

        expando.wins = 42;

        expando.dt = GetDT();

        string json = JsonConvert.SerializeObject(expando);

        Console.WriteLine(json);

​

        JObject _parsedString = JObject.Parse(json);

        Console.WriteLine(_parsedString["name"]);

        Console.WriteLine(_parsedString["wins"]);

        Console.WriteLine(_parsedString["SomeProp"]);

        Console.WriteLine(_parsedString["SomeProp 2"]);

        //Console.WriteLine(_parsedString["dt"]);

        DataTable dt2 = JsonConvert.DeserializeObject<DataTable>(_parsedString["dt"].ToString());

        Console.WriteLine(dt2.Rows[1][0]);  // print 1

        Console.WriteLine(dt2.Rows[1][1]);  // print A1

        Console.WriteLine(dt2.Rows[1][2]);  // print 10

    }

    private static DataTable GetDT()

    {

        DataTable table = new DataTable();

        table.TableName = "Table1";  // `TableName` won't be serialized

​

        table.Columns.Add("id", typeof(int));

        table.Columns["id"].AutoIncrement = true;

        table.Columns.Add("label", typeof(string));

        table.Columns.Add("value", typeof(decimal));

        for (int i = 0; i < 2; i++)

        {

            DataRow newRow = table.NewRow();  // create a new row

            newRow["label"] = "A" + i; 

            newRow["value"] = i*10; 

            table.Rows.Add(newRow);

        }

        return table;

    }   

}

​