using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
namespace WindowsService1
{
    public partial class Service1 : ServiceBase
    {
        public Service1()
        {
            InitializeComponent();
        }
        string filePath = "D:\\Service1.txt";
        protected override void OnStart(string[] args)//服務(wù)啟動(dòng)的時(shí)候執(zhí)行
        {
            using (FileStream stream = new FileStream(filePath, FileMode.Append))
            using (StreamWriter writer = new StreamWriter(stream))
            {
                writer.WriteLine($"{DateTime.Now},服務(wù)啟動(dòng)！");
            }
        }
        protected override void OnStop()//服務(wù)停止的時(shí)候執(zhí)行
        {
            using (FileStream stream = new FileStream(filePath, FileMode.Append))
            using (StreamWriter writer = new StreamWriter(stream))
            {
                writer.WriteLine($"{DateTime.Now},服務(wù)停止！");
            }
        }
    }
}

cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319

installutil.exe /i C:\Users\user\source\repos\WindowsService1\WindowsService1\bin\Debug\WindowsService1.exe

installutil.exe /u C:\Users\user\source\repos\WindowsService1\WindowsService1\bin\Debug\WindowsService1.exe