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.Threading.Tasks;

​

using System.Text.Json;

using System.Text.Json.Serialization;

​

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

​

//https://stackoverflow.com/questions/62047325/how-to-write-a-string-array-with-a-utf8jsonwriter

​

    public class InformationObject

    {

        public List<string> Tags { get; set; } = new List<string>();

    }

​

    public class InformationObjectConverter : JsonConverter<InformationObject>

    {

        public override InformationObject Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)

        {

            throw new NotImplementedException();

        }

​

        public override void Write(Utf8JsonWriter writer, InformationObject value, JsonSerializerOptions options)

        {

            writer.WriteStartObject();

            writer.WriteStartObject("InformationObject");

            writer.WriteString("Name", "Info Name");

            writer.WriteString("Details", "Info Details");

            writer.WriteStartArray("Tags");     

            // Write some dummy values here

            writer.WriteStringValue("value1");

            writer.WriteStringValue("value2");

            writer.WriteEndArray();

            writer.WriteEndObject();

            writer.WriteEndObject();

        }

    }

​

    public class Program

    {

        public static async Task Test()

        {

            var model = new InformationObject();

            var options = new JsonSerializerOptions

            {

                Converters = { new InformationObjectConverter() },

                WriteIndented = true,

            };

            var json = JsonSerializer.Serialize(model, options);

            Console.WriteLine(json);

        }

        public static async Task Main(string[] args)

        {

            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

            {

                await 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;

        }

    }

​