using System;

using System.Collections.Generic;

using System.Text.Json;

​

namespace ConsoleApp2

{

    class Poco

    {

        public int IntMember { get; set; }

        public string StringMember { get; set; }

    }

​

    class Program

    {

​

​

        static void Main(string[] args)

        {

​

            string s = "Hello, World";

            string jsonString = JsonSerializer.Serialize(s);

            Console.WriteLine("serialized:{2}\n{0} is the same:{1}\n--", s.GetType().Name, s == JsonSerializer.Deserialize<string>(jsonString),jsonString);

​

            decimal d = 1.2345m;

            jsonString = JsonSerializer.Serialize(d);

            Console.WriteLine("serialized:{2}\n{0} is the same:{1}\n--", d.GetType().Name, d == JsonSerializer.Deserialize<decimal>(jsonString), jsonString);

​

            DateTime dt=DateTime.Now;

            jsonString = JsonSerializer.Serialize(dt);

            Console.WriteLine(jsonString);

            Console.WriteLine("serialized:{2}\n{0} is the same:{1}\n--", dt.GetType().Name, dt == JsonSerializer.Deserialize<DateTime>(jsonString), jsonString);

​

            List<Poco> listOfObjects = new List<Poco>();

            listOfObjects.AddRange(new Poco[]

            {

                new Poco{IntMember = 1,StringMember = "Poco1"},

                new Poco{IntMember = 2,StringMember = "Poco2"},

                new Poco{IntMember = 3,StringMember = "Poco3"}

​

            });

            jsonString = JsonSerializer.Serialize(listOfObjects);

            Console.WriteLine($"serialized:{jsonString}");

​

​

        }

    }

}

​