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;    

​

using Namespace.Models;

​

// https://stackoverflow.com/questions/49454071/model-binding-json-data-with-metadatapropertyhandling-in-asp-net-mvc-core-2?noredirect=1#comment85913826_49454071

​

​

​

namespace Namespace.Models

{

    public abstract class ModelBase

    {

    }

​

    public class ApplicationLoggingModel : ModelBase

    {

        public string Test { get; set; }

    }

​

    public class AnotherModel : ModelBase

    {

        public string AnotherTest { get; set; }

    }

}

​

    // https://stackoverflow.com/questions/49454071/model-binding-json-data-with-metadatapropertyhandling-in-asp-net-mvc-core-2?noredirect=1#comment85913826_49454071

​

    public class ModelBaseCollectionDTO

    {

        [JsonProperty(ItemTypeNameHandling = TypeNameHandling.Auto)]

        public List<ModelBase> Models { get; set; }

    }

​

    class TestClass

    {

        public static void Test()

        {

            TestRoundTrip();

        }

​

        private static void TestRoundTrip()

        {

            var dto = new ModelBaseCollectionDTO

            {

                Models = new List<ModelBase>()

                {

                    new ApplicationLoggingModel { Test = "test value" },

                    new AnotherModel { AnotherTest = "another test value" },

                },

            };

​

            var json = JsonConvert.SerializeObject(dto, Formatting.Indented, new JsonSerializerSettings { TypeNameAssemblyFormat = FormatterAssemblyStyle.Full });

​

            Console.WriteLine(json);

​

            var dto2 = JsonConvert.DeserializeObject<ModelBaseCollectionDTO>(json);

​

            Assert.IsTrue(dto.Models.Select(m => m.GetType()).SequenceEqual(dto2.Models.Select(m => m.GetType())));

            Assert.IsTrue(dto.Models.Select(m => JsonConvert.SerializeObject(m)).SequenceEqual(dto2.Models.Select(m => JsonConvert.SerializeObject(m))));

​

            Console.WriteLine("{0} round-tripped successfully.", dto2);

        }

    }

​

    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");

        }

    }

​