Timer 定时任务

public class OnlinePay 
    {
        private static double dayEndStartTime = 0;
        private static double dayEndStopTime = 0;
        private static int retransmitInterval = 0;
        private static System.Timers.Timer timer = null;//添加静态定时任务变量，

        public OnlinePay()
        {
            if (dayEndStartTime == 0)
                dayEndStartTime = Convert.ToDouble(ConfigurationManager.AppSettings["DayEndTimeRange_Start"].ToString());
            if (dayEndStopTime == 0)
                dayEndStopTime = Convert.ToDouble(ConfigurationManager.AppSettings["DayEndTimeRange_Stop"].ToString());
            if (retransmitInterval == 0)
                retransmitInterval = Convert.ToInt32(ConfigurationManager.AppSettings["RetransmitInterval"].ToString());

            #region 定时任务
            if (timer == null)
            {
                timer = new System.Timers.Timer(retransmitInterval * 1000);
                timer.AutoReset = true;
                timer.Enabled = true;
                timer.Elapsed += Timer_Elapsed;
            }
            else
            {
                timer.Interval = retransmitInterval * 1000;
                timer.Enabled = Convert.ToBoolean(ConfigurationManager.AppSettings["IsStartTask"].ToString());
            }
            #endregion
        }

        /// <summary>
        /// 每小时重传一次OnlinePay数据
        /// 间隔固定时间执行
        /// </summary>
        private void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            if (DateTime.Now.TimeOfDay > TimeSpan.FromHours(dayEndStartTime) || DateTime.Now.TimeOfDay < TimeSpan.FromHours(dayEndStopTime))
            {
                //不操作了，晚上歇歇
            }
            else
            {
                //给同步OnlinePay数据，每小时一次

            }
        }
    }

Web.Config配置项

    <!--DayEndTime Setting(start time: 22; stop time: 7)，Dayend执行期间：晚上22点 < 当前时间 < 第二天早7点-->
    <add key="DayEndTimeRange_Start" value="22"/>
    <add key="DayEndTimeRange_Stop" value="7"/>
    <!--Retransmit Interval(重发间隔：默认3600s)-->
    <add key="RetransmitInterval" value="3600"/>
    <!--是否启动定时任务，由于有负载均衡，所以添加一个开关(True/False)-->
    <add key="IsStartTask" value="False"/>
    <!--DayEndTime Setting(start time: 22; stop time: 7)，Dayend执行期间：晚上22点 < 当前时间 < 第二天早7点-->