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 System.Runtime.Serialization;

​

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/27681377/unwrapped-property-in-c-sharp-json

​

    public class ResourceId 

    {

        public int UserId { get; set; }

        public int Id { get; set; }

    }

​

    [DataContract]

    public class Resource 

    {

        [IgnoreDataMember]

        public ResourceId ResourceId { get; set; }

​

        [DataMember(Name="user_id")]

        private int? user_id {

            get

            {

                return ResourceId == null ? (int ?)null : ResourceId.UserId;

            }

            set

            {

                if (value == null)

                {

                    ResourceId = null;

                }

                else

                {

                    if (ResourceId == null)

                        ResourceId = new ResourceId();

                    ResourceId.UserId = value.Value;

                }

            }

        }

​

        [DataMember(Name="resource_id")]

        private int? resource_id

        {

            get

            {

                return ResourceId == null ? (int?)null : ResourceId.Id;

            }

            set

            {

                if (value == null)

                {

                    ResourceId = null;

                }

                else

                {

                    if (ResourceId == null)

                        ResourceId = new ResourceId();

                    ResourceId.Id = value.Value;

                }

            }

        }

​

        [DataMember(Name="resource_name")]

        public string ResourceName { get; set; }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var json = @"{ ""user_id"": 0, ""resource_id"": 0, ""resource_name"": ""file.xml""}";

            var resource = JsonConvert.DeserializeObject<Resource>(json);

​

            Assert.AreEqual(0, resource?.ResourceId.UserId);

            Assert.AreEqual(0, resource?.ResourceId.Id);

            Assert.AreEqual(0, resource?.ResourceId.UserId);

            Assert.AreEqual("file.xml", resource.ResourceName);

            var newJson = JsonConvert.SerializeObject(resource);

            Console.WriteLine(newJson);

​

            Assert.IsTrue(JToken.DeepEquals(JToken.Parse(json), JToken.Parse(newJson)));

        }   

    }

​

    public class Program

    {

        public static void Main()

        {

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

            Console.WriteLine("{0} version: {1}", typeof(JsonSerializer).Assembly.GetName().Name,  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.Location.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;

        }

    }

​