using System;

using System.Collections.Generic;

using System.Text.Json;

​

public class Program

{

    public static void Main()

    {

        SerializeDateTimeTest();

        Console.WriteLine("Done");

    }

    public static void SerializeDictionaryTest()

    {

        var d = new Dictionary<string, string>();

        d.Add("foo", "hello");

        d.Add("bar", "world");

        var json = JsonSerializer.Serialize(d, new JsonSerializerOptions{ WriteIndented = true });

        Console.WriteLine(json);

    }

    public static void SerializeDateTimeTest()

    {

        var dt = DateTime.UtcNow;

        var json = JsonSerializer.Serialize(dt);

        Console.WriteLine(json);

        var jdt = JsonSerializer.Deserialize<DateTime>(dt);

        var cdt = jdt.ToLocalTime();

        Console.WriteLine($"jdt: {cdt}");

    }

}