using System;

using System.Dynamic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        dynamic obj = new ExpandoObject();

        obj.Prop1 = "Test1";

        obj.Prop2 = "Test2";

        Console.WriteLine(obj.Prop1);

        Console.WriteLine(obj.Prop2);

        string jsonString = JsonConvert.SerializeObject(obj);

        Console.WriteLine(jsonString);

    }

    public class MyDynamic : DynamicObject {}

}