In .net 4.8,calculate the time cost of serialization in BinaryFormatter,NewtonSoft.json,and System.Text.Json.JsonSerializer.Serialize

 using ConsoleApp390.Model;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp390
{
    class Program
    {
        static void Main(string[] args)
        {
            SerializationDemo();
        }

        static void SerializationDemo()
        {
            List<SalesOrderDetail> dataList = GetList();
            bool IsBusy = false;
            for(int i=;i<;i++)
            {
                if(!IsBusy)
                {
                    IsBusy = true;                   

                    Task task = Task.Run(() =>
                    {
                        TestCostDemo(dataList);
                    });
                    task.Wait();

                    Console.WriteLine($"Task {i} has finished!");
                    IsBusy = false;
                }
            }
        }
        static void TestCostDemo(List<SalesOrderDetail> dataList)
        {
            StringBuilder msgBuilder = new StringBuilder();
            Stopwatch sw = new Stopwatch();

            sw.Start();
            Console.WriteLine($"BinaryFormatterDemo started at {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");
            BinaryFormatterDemo<SalesOrderDetail>(dataList);
            sw.Stop();
            Console.WriteLine($"BinaryFormatterDemo stopped at {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");
            msgBuilder.Append($"In  .net 4.8,now {DateTime.Now.ToString("yyyyMMddHHmmssffff")} BinaryFormatterDemo cost {sw.ElapsedMilliseconds} milliseconds.");

            sw.Restart();
            Console.WriteLine($"NewtonJsonDemo started at {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");
            NewtonJsonDemo<SalesOrderDetail>(dataList);
            sw.Stop();
            Console.WriteLine($"NewtonJsonDemo stopped at {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");
            msgBuilder.Append($"NewtonJsonDemo cost {sw.ElapsedMilliseconds} milliseconds.");

            sw.Restart();
            Console.WriteLine($"JsonSerializerDemo started at {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");
            JsonSerializerDemo<SalesOrderDetail>(dataList);
            sw.Stop();
            Console.WriteLine($"JsonSerializerDemo stopped at {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");
            msgBuilder.AppendLine($"JsonSerializerDemo cost {sw.ElapsedMilliseconds} milliseconds.\n\n");
            string msg = msgBuilder.ToString();
            PrintMsg(msg);
        }

        private static void PrintMsg(string msg)
        {
            Console.WriteLine(msg);
            Debug.WriteLine(msg);
            LogResult(msg);
        }

        static List<SalesOrderDetail> GetList()
        {
            using (AdventureWorks2017Entities db = new AdventureWorks2017Entities())
            {
                List<SalesOrderDetail> dataList = new List<SalesOrderDetail>(db.SalesOrderDetails);
                return dataList;
            }
        }
        static void BinaryFormatterDemo<T>(List<T> dataList)
        {
            using (FileStream fs = new FileStream($"{Guid.NewGuid().ToString().Substring(0, 6)}BinFormatter.dat", FileMode.Create))
            {
                BinaryFormatter binFormatter = new BinaryFormatter();
                try
                {
                    binFormatter.Serialize(fs, dataList);
                }
                catch (SerializationException e)
                {
                    Console.WriteLine($"BinaryFormatter serialize ex:{e.StackTrace}");
                }
            }
        }
        static void NewtonJsonDemo<T>(List<T> dataList)
        {
            try
            {
                string jsonString = JsonConvert.SerializeObject(dataList);
            }
            catch (SerializationException ex)
            {
                Console.WriteLine($"NewtonJson serialization ex :{ex.StackTrace}");
            }
        }
        static void JsonSerializerDemo<T>(List<T> dataList)
        {
            try
            {
                string msJsonSerializerString = System.Text.Json.JsonSerializer.Serialize(dataList);
            }
            catch (SerializationException ex)
            {
                Console.WriteLine($"System.Text.Json.JsonSerializer ex:{ex.StackTrace}");
            }
        }
        static void LogResult(string msg)
        {
            string logPath = @"log.txt";
            using (StreamWriter logWriter = new StreamWriter(logPath, true, Encoding.UTF8))
            {
                logWriter.WriteLine(msg);
            }
        }
    }
}

I had validated in .net 4.8 NewtonSoft.Json's speed rank 1st,System.Text.Json.JsonSerializer.Serialize 2nd,and BinaryFormatter 3rd.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.

In  .net 4.8,now  BinaryFormatterDemo cost  milliseconds.NewtonJsonDemo cost  milliseconds.JsonSerializerDemo cost  milliseconds.