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 Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

// https://stackoverflow.com/questions/29688498/how-to-deserialize-json-to-objects-of-the-correct-type-without-having-to-define/29689910?noredirect=1#comment87767365_29689910

​

    public class MyClass1

    {

    }

​

    public class MyClass2

    {

    }

​

    public class MyClass3

    {

    }

​

    class TestClass

    {

        public static void Test()

        {

            Test(new MyClass1());

            Test(new MyClass2());

            Test(new MyClass3());

        }

        public static void Test(object rootObject)

        {

            // TypeNameAssemblyFormat = FormatterAssemblyStyle.Full is required on dotnetfiddle

            // due to partial trust restrictions.

            var settings = new JsonSerializerSettings { TypeNameHandling = TypeNameHandling.Auto, TypeNameAssemblyFormat = FormatterAssemblyStyle.Full };

            var json = JsonConvert.SerializeObject(rootObject, typeof(object), settings);   

            Console.WriteLine(json);

            var b1 = JsonConvert.DeserializeObject<object>(json, settings);

            Assert.IsTrue(rootObject.GetType() == b1.GetType());

        }

    }

​

    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;

            }

        }

    }

​

    public class AssertionFailedException : System.Exception

    {

        public AssertionFailedException() : base() { }

​

        public AssertionFailedException(string s) : base(s) { }

    }

​

    public static class Assert

    {

        public static void IsTrue(bool value)

        {

            IsTrue(value, "failed");

        }

​

        public static void IsTrue(bool value, string message)

        {

            if (value == false)

                throw new AssertionFailedException(message ?? "failed");

        }

    }

​