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 AjaxControlToolkit;

​

// https://stackoverflow.com/questions/49280483/serialize-and-deserialize-ajaxfileuploadeventargs-no-parameterless-constructor

// https://github.com/DevExpress/AjaxControlToolkit/blob/master/AjaxControlToolkit/AjaxFileUpload/AjaxFileUploadEventArgs.cs

​

    class TestClass

    {

        public static void Test()

        {

            var args0 = new AjaxFileUploadEventArgs("file id", AjaxFileUploadState.Unknown, "status message", "file name", 1010101, "text");

​

            var jsonString = JsonConvert.SerializeObject(args0, Formatting.Indented);

            Console.WriteLine(jsonString);

            var deserializeFile = 

                Newtonsoft.Json.JsonConvert.DeserializeObject<AjaxFileUploadEventArgs>(jsonString);

            var json2 = JsonConvert.SerializeObject(deserializeFile, Formatting.Indented);

            Console.WriteLine("Deserialized and re-serialized {0}", args0);

            Console.WriteLine(json2);

            Assert.IsTrue(jsonString == json2);

        }

    }

​

​

    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");

        }

    }

​