【.Net 学习系列】-- .Net 指定时间段内定时执行的Windows服务（System.Threading.Thread）

1. 创建一个Windows服务项目：解决方案（右击）——> 添加 ——> 新建项目——>项目类型选择Windows——>模板选择Windows服务 ，如图：
   
2. 编写Windows服务程序
   创建后会生成两个文件 Program.cs 和 Service1.cs（我已重命名为MyService.cs），编写服务内容：
   
   具体服务代码：

    using System;
    using System.Configuration;
    using System.ServiceProcess;
    using System.Threading;
    
    namespace WindowsServiceTest
    {
        public partial class MyService : ServiceBase
        {
    
            private Thread _thread = null;
            private bool serviceIsRun = false;  // 是否一直运行
    
            public MyService()
            {
                InitializeComponent();
            }
    
            protected override void OnStart(string[] args)
            {
                LogHelper.WriteLog("服务启动...");
                serviceIsRun = true;
                _thread = new Thread(CheckSrv);
                _thread.Start();
            }
    
            protected override void OnStop()
            {
                serviceIsRun = false;
                LogHelper.WriteLog("服务停止...");
            }
    
            protected void CheckSrv()
            {
                var beginTime = ConfigurationManager.AppSettings["BeginTime"];
                var endTime = ConfigurationManager.AppSettings["EndTime"];
                while (serviceIsRun)
                {
                    try
                    {
                        if (IsRunTime(beginTime, endTime))
                        {
                            // TODO:
                            for (int i = ; i < ; i++)
                            {
                                if (!IsRunTime(beginTime, endTime))
                                {
                                    Thread.Sleep( * );
                                }
                                else
                                {
                                    LogHelper.WriteLog("当前数字：" + i);
                                }
                            }
                        }
                        else
                        {
                            Thread.Sleep( * );
                            LogHelper.WriteLog("未达到服务执行时间...");
                        }
                    }
                    catch (Exception ex)
                    {
                        LogHelper.WriteLog("服务发生异常：" + ex.ToString());
                    }
                }
            }
    
            /// <summary>
            /// 判断程序是否在设置运行时间内
            /// </summary>
            /// <param name="startTime">开始执行时间</param>
            /// <param name="overTime">执行结束时间</param>
            /// <returns>true：在执行时间内，false：在执行时间外</returns>
            private bool IsRunTime(string startTime, string overTime)
            {
                var flag = false;
    
                var beginTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " " + startTime);
                var endTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " " + overTime);
    
                if (beginTime <= endTime)   // 当天
                {
                    flag = beginTime <= DateTime.Now && DateTime.Now <= endTime;
                }
                else    // 跨天
                {
                    var zeroTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " 00:00");
                    flag = (beginTime <= DateTime.Now && DateTime.Now <= zeroTime.AddDays()) || (zeroTime <= DateTime.Now && DateTime.Now <= endTime);
                }
    
                return flag;
            }
        }
    }

   配置文件：

    <?xml version="1.0" encoding="utf-8" ?>
    <configuration>
      <appSettings>
        <add key="LogPath" value="Log"/>
        <add key="BeginTime" value="10:28"/>
        <add key="EndTime" value="10:38"/>
      </appSettings>
    </configuration>

   日志代码：

    using System;
    using System.Configuration;
    using System.IO;
    using System.Text;
    
    namespace WindowsServiceTest
    {
        internal class LogHelper
        {
            /// <summary>
            /// 记录日志
            /// </summary>
            /// <param name="logContext">日志内容</param>
            public static void WriteLog(string logContext)
            {
                var logPath = AppDomain.CurrentDomain.BaseDirectory + ConfigurationManager.AppSettings["LogPath"].ToString();
                if (!Directory.Exists(logPath))
                {
                    Directory.CreateDirectory(logPath);
                }
                var filePath = logPath + "\\" + DateTime.Now.ToString("yyyy-MM-dd") + ".txt";
                var fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
                var m_streamWriter = new StreamWriter(fs);
                m_streamWriter.BaseStream.Seek(, SeekOrigin.End);
                var sb = new StringBuilder();
                if (!string.IsNullOrEmpty(logContext))
                {
                    sb.Append(Environment.NewLine);
                    sb.Append(logContext);
                }
                sb.Append(" "+DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ffff")+Environment.NewLine);
                m_streamWriter.WriteLine(sb.ToString());
                m_streamWriter.Flush();
                m_streamWriter.Close();
                fs.Close();
            }
        }
    }