using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

    public class Info

    {

       public string Title{ get; set; }

       public string Description{ get; set; }

       public Contents Contents{ get; set; }

    }

​

​

    //[DataContract] not supported on https://dotnetfiddle.net/

    public class Contents {

​

        //[DataMember(Name = "FirstKey")]

        public string FirstKey{ get; set; }

​

        //[DataMember(Name = "SecondKey")]

        public string SecondKey{ get; set; }

​

        //[DataMember(Name = "ThirdKey"]

        public string ThirdKey { get; set; }

​

     }

​

    class TestClass

    {

        public static void Test()

        {

            var text = "{ "Title:": "StructureTitle", "Description:" : "StructureDescription", "Contents": "[{"Key":"FirstKey","Value":"FirstValue"},{"Key":"SecondKey","Value":"SecondValue"},{"Key":"ThirdKey","Value":"ThirdValue"}]" }"

            JToken token = JObject.Parse(text);

            var x = token.SelectToken("Contents");

            Contents c = x.ToObject<Contents>();

​

        }   

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: " + Environment.Version);

            Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​