记录一个用C#实现的windows计时执行任务的服务

这个服务实现的功能是每天下午六点统计一次指定路径的文件夹大小

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 ProjectSizeStatistics
{
    public partial class MyService1 : ServiceBase
    {
        public MyService1()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            WriteInfo("服务启动");
            InitTimer();
        }
        int _checkHour = 18; //每天六点检测
        private string filePath = @"D:\FileSizeStatistic.txt";
        void InitTimer()
        {
            var timer = new System.Threading.Timer(TimerCallBack, null, 5000, 360000);      //一小时执行一次
        }
        void TimerCallBack(object pData)
        {
            DateTime now = DateTime.Now;
            var hour = now.Hour;
            if (hour == _checkHour)
            {
                SampleProjectSize();
            }
        }
        /// <summary>
        /// 采集项目大小
        /// </summary>
        void SampleProjectSize()
        {
            string path = @"D:\Projects\GitProject\ClientPro";
            long size = GetDirectorySize(path);
            int GB = (int)(size / 1024 / 1024 / 1024);
            float remainGb = size * 1.0f / 1024 / 1024 / 1024 - GB;
            WriteInfo($"{path}   文件大小为\"{size}\"字节\t{(GB + remainGb).ToString("f2")}G");
        }
        /// <summary>
        /// 获取文件夹的大小，返回字节数
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        long GetDirectorySize(string path)
        {
            long size = 0;
            DirectoryInfo dir = new DirectoryInfo(path);
            foreach (var item in dir.GetFiles())
            {
                size += item.Length;
            }
            foreach (var item in dir.GetDirectories())
            {
                size += GetDirectorySize(item.FullName);
            }
            return size;
        }
        private void WriteInfo(string info)
        {
            //using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate))
            //{
            //}
            using (StreamWriter writer = File.AppendText(filePath))
            {
                writer.WriteLine($"{DateTime.Now}\t{info}");
            }
        }

        protected override void OnStop()
        {
        }
    }
}

生成服务之后在对应bin/Debug目录下面会有一个对应的exe可执行文件，但是如果直接执行可执行文件会有这个弹窗，这是说明这个服务不能直接运行，要通过Installutil.exe去执行，