using System;

using MessagePack;

​

var rect1 = new

{

    left = 1,

    top = 2,

    right = 3,

    bottom = 4,

};

var rect2 = 

(

    left: 1,

    top: 2,

    right: 3,

    bottom: 4

);

​

var msgpack1 = MessagePackSerializer.Serialize(rect1);

var msgpack2 = MessagePackSerializer.Serialize(rect2);

​

Console.WriteLine(MessagePackSerializer.ConvertToJson(msgpack1));

Console.WriteLine(MessagePackSerializer.ConvertToJson(msgpack2));

​

​

Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(rect1));

Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(rect2));

​

Console.WriteLine(System.Text.Json.JsonSerializer.Serialize(rect1));

Console.WriteLine(System.Text.Json.JsonSerializer.Serialize(rect2));