using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

public class Program

{

    public static void Main()

    {

        // use dynamic object

        var obj = new { product = 1, name = "Nike", madeIn = new List<string>{"USA","Vietname"} };

        Console.WriteLine(JsonConvert.SerializeObject(obj));

        // use dictionary

        IDictionary<string, object> dictionary = new Dictionary<string, object>(){};

        dictionary["product"] = 1;

        dictionary.Add("name","Nike");

        dictionary["madeIn"] = new List<string>(){"USA","Vietname"};

        Console.WriteLine(JsonConvert.SerializeObject(dictionary));

        // use NewtonSoft JOBject

        dynamic jObject = new JObject();

        jObject.product = 1;

        jObject.name = "Nike";

        jObject.madeIn = new JArray();

        jObject.madeIn.Add("USA");

        jObject.madeIn.Add("Vietname");

        Console.WriteLine(jObject.ToString());

​

    }

}