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C# windows服务傻瓜式教程

public partial class Service1 : ServiceBase
    {

        /// <summary>
        /// 定义是否在正在后台执行，如果执行将路过
        /// </summary>
        private static bool IsGoon = true;

        /// <summary>
        /// 定期事件，定时执行
        /// </summary>
        protected System.Timers.Timer TimerReadTask = null;

        /// <summary>
        /// 构造函数
        /// </summary>
        public Service1()
        {
            InitializeComponent();
            //定时器，定时执行
            TimerReadTask = new System.Timers.Timer { Enabled = true, Interval = 5000 };
            //5秒读一下任务
            TimerReadTask.Elapsed += new System.Timers.ElapsedEventHandler(TimerReadTaskElapsed);
        }

        #region 定时操作线程
        /// <summary>
        /// 定时操作线程
        /// </summary>
        /// <param name="sender">系统变量</param>
        /// <param name="e">系统变量</param>
        void TimerReadTaskElapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            //如果还在执行，路过。
            if (IsGoon)
            {
                if (bg_Work.IsBusy == false)
                {
                    //这个是我业务用到，你可以不用直接RunWorkerAsync()就行
                    DataTable dtTask = GetSendInformation();
                    if (dtTask.Rows.Count > 0)
                    {
                        IsGoon = false;
                        //这句执行完了将执行bg_Work_DoWork方法 dtTask参数 可以在bg_Work_DoWork变量里取到
                        bg_Work.RunWorkerAsync(dtTask);
                    }
                }
            }

        }
        #endregion


        #region 线程事件
        /// <summary>
        /// backgroundWorker的DoWork事件，线程事件你的所有业务在这里执行
        /// </summary>
        /// <param name="sender">系统变量</param>
        /// <param name="e">系统变量</param>
        private void bg_Work_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
        {
            //接受RunWorkerAsync 里的传过来的值
            DataTable dtSendInformation = e.Argument as DataTable;
            /***********************************************
             * 你的所有业务在这里执行
            ***********************************************/
            //设置状态，在线程结束的时候可以根据这个值来判断运行成功还是失败
            e.Result = "1";
        }
        #endregion


        /// <summary>
        /// bg_Work 的RunWorkerCompleted事件 线程结束是运行（只有bg_Work_DoWork 事件執行，這個方法才會執行
        /// </summary>
        /// <param name="sender">系统变量</param>
        /// <param name="e">系统变量</param>
        private void bg_Work_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Result.ToString() == "1")
            {
                IsGoon = true;
            }
            else
            {
                ///失败了发邮件。你也可以不做这步
                SendMail(e.Error.Message);
            }
        }

        #region 发邮件
        /// <summary>
        /// 发邮件
        /// </summary>   
        public static void SendMail(string strMessage)
        {
            string strSendMail = System.Configuration.ConfigurationSettings.AppSettings.Get("SendMail");
            string strSendMailPwd = System.Configuration.ConfigurationSettings.AppSettings.Get("SendMailPwd");
            string strToList = System.Configuration.ConfigurationSettings.AppSettings.Get("ToErrorList");
            string strMailService = System.Configuration.ConfigurationSettings.AppSettings.Get("MailService");
            string strTitle = "非联网系统" + DateTime.Now.ToLongDateString() + "异常邮件";
            string strContent = "<br><font color = red ><B>非联网海关端-企业信息管理-短信发送时出错：</B></font >";
            strContent += "<br>〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓<br><br>";
            strContent += strMessage;
            strContent += "<br><br>〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓";
            System.Net.Mail.SmtpClient client = new SmtpClient(strMailService);
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential(strSendMail, strSendMailPwd);
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage(strSendMail, strToList, strTitle, strContent);
            message.BodyEncoding = System.Text.Encoding.UTF8;
            message.IsBodyHtml = true;
            client.Send(message);
        }
        #endregion
        /// <summary>
        /// 获取一个datable
        /// </summary>
        /// <returns></returns>
        private static DataTable GetSendInformation()
        {          
            DataTable dtSendinformation = null;
            return dtSendinformation;
        }

        /// <summary>
        /// 启动服务
        /// </summary>
        protected override void OnStart(string[] args)
        {
            //服务开始时启动定期执行事件
            TimerReadTask.Start();          
        }

        /// <summary>
        /// 停止服务
        /// </summary>
        protected override void OnStop()
        {
            if (bg_Work.IsBusy == false)
            {
                //服务开始时停止定期执行事件
                TimerReadTask.Stop();
            }
            else
            {
                throw new Exception("任务正在执行，不可以停止服务......");
            }
        }
    }

1、先增加一个WINDOWS服务工程