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.Text.Json;

using System.Text.Json.Serialization;

​

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

​

//https://stackoverflow.com/questions/71974889/getting-null-after-trying-to-deserialize-json-to-c-sharp-class

​

    public record Report

    {

        [JsonPropertyName("date")]

        public DateTime? ReportDate { get; init; }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var report1 = new Report

            {

                ReportDate = new DateTime(2022, 2, 2, 2, 2, 2, DateTimeKind.Utc),

            };

            var json = JsonSerializer.Serialize(report1);

            Console.WriteLine(json);

            var report2 = JsonSerializer.Deserialize<Report>(json);

            report2.Dump();

            Assert.AreEqual(report1.ReportDate, report2.ReportDate);

        }

    }

​

    public class Program

    {

        public static void Main()

        {

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

            Console.WriteLine("System.Text.Json version: " + typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​