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 System.Collections.ObjectModel;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

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

​

//https://stackoverflow.com/questions/60254867/call-default-jsonserializer-in-a-jsonconverter-for-certain-value-type-arrays

​

    public sealed class ByteConverter : JsonConverter<byte[]>

    {

        [ThreadStatic]

        static bool disabled;

​

        // Disables the converter in a thread-safe manner.

        bool Disabled { get { return disabled; } set { disabled = value; } }

​

        public override bool CanRead { get { return !Disabled; } }

​

        public override byte[] ReadJson(JsonReader reader, Type objectType, byte[] existingValue, bool hasExistingValue, JsonSerializer serializer)

        {

            switch (reader.MoveToContentAndAssert().TokenType) // Skip past comments

            {

                case JsonToken.Null:

                    return null;

​

                case JsonToken.StartArray:

                    // Your custom logic here, e.g.:

                    return serializer.Deserialize<List<byte>>(reader).ToArray();

​

                default:

                    using (new PushValue<bool>(true, () => Disabled, val => Disabled = val))

                        return serializer.Deserialize<byte []>(reader);

            }

        }

​

        // Remainder omitted

        public override bool CanWrite => false;

​

        public override void WriteJson(JsonWriter writer, byte[] value, JsonSerializer serializer) => throw new NotImplementedException();

    }

​

    public struct PushValue<T> : IDisposable

    {

        Action<T> setValue;

        T oldValue;

​

        public PushValue(T value, Func<T> getValue, Action<T> setValue)

        {

            if (getValue == null || setValue == null)

                throw new ArgumentNullException();

            this.setValue = setValue;

            this.oldValue = getValue();

            setValue(value);

        }

​

        // By using a disposable struct we avoid the overhead of allocating and freeing an instance of a finalizable class.

        public void Dispose()

        {

            if (setValue != null)

                setValue(oldValue);

        }

    }

​

    public static partial class JsonExtensions

    {

        public static JsonReader MoveToContentAndAssert(this JsonReader reader)

        {

            if (reader == null)

                throw new ArgumentNullException();

            if (reader.TokenType == JsonToken.None)       // Skip past beginning of stream.

                reader.ReadAndAssert();

            while (reader.TokenType == JsonToken.Comment) // Skip past comments.

                reader.ReadAndAssert();

            return reader;

        }

​

        public static JsonReader ReadAndAssert(this JsonReader reader)

        {

            if (reader == null)

                throw new ArgumentNullException();

            if (!reader.Read())

                throw new JsonReaderException("Unexpected end of JSON stream.");

            return reader;

        }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var settings = new JsonSerializerSettings 

            {

                Converters = { new ByteConverter() },

            };

            var list = Enumerable.Range(0, byte.MaxValue+1).Select(i => (byte)i).ToList();

            var json = JsonConvert.SerializeObject(list, settings);

​

            Console.WriteLine(json);

            var array = JsonConvert.DeserializeObject<byte []>(json, settings);

            Assert.IsTrue(list.SequenceEqual(array));

            var json2 = JsonConvert.SerializeObject(array, settings);

​

            Console.WriteLine(json2);

            var array2 = JsonConvert.DeserializeObject<byte []>(json, settings);

            Assert.IsTrue(list.SequenceEqual(array2));

        }   

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , GetNetCoreVersion());

            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 static string GetNetCoreVersion()

        {

            //https://techblog.dorogin.com/how-to-detect-net-core-version-in-runtime-ecd65ad695be

            //

            var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;

            var assemblyPath = assembly.CodeBase.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);

            int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");

            if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)

                return assemblyPath[netCoreAppIndex + 1];

            return null;

        }

    }

​