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/73279948/c-sharp-json-post-request-body-default-value-of-a-property-is-not-populated-afte

​

    public class Payload

    {

        public string DisplayName { get; set; }

        public string Id { get; set; }

        public bool IgnoreCache { get; set; }

        public string TenantId { get; set; } = "Default Value";

    }

​

    class TestClass

    {

        public static void Test()

        {

            var jsonBody = GetJson();

            var model = JsonConvert.DeserializeObject<Payload>(jsonBody);           

            model.Dump();

            var newJson = JsonConvert.SerializeObject(model, Formatting.Indented);

            Console.WriteLine("Re-serialized {0};", model);

            Console.WriteLine(newJson);

        }   

        static string GetJson() => @"{

    ""displayName"": ""Something"",

    ""id"": ""something"",

    ""ignoreCache"": false,

    ""tenantId"": """"

}

";

    }

​

    public class Program

    {

        public static void Main()

        {

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

            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;

            }

        }

    }

​