小弟裸体天寒地冻空翻1800度倒立跪求定时提醒功能实现

    private void timeSpanRemind()    {        DataTable dt = getRemindTime();        for (int i = 0; i < dt.Rows.Count; i++)        {            if (dt.Rows[i]["IsRemind"].ToString() == "True")            {                DateTime nowtime = DateTime.Now;                string temp = dt.Rows[i]["RemindTime"].ToString() + ":00";                DateTime remindtime = DateTime.Parse(temp);                int timespan = int.Parse(dt.Rows[i]["TimeSpan"].ToString());                int advancetime = int.Parse(dt.Rows[i]["AdvanceTime"].ToString());                string title = dt.Rows[i]["Title"].ToString();                Timer timer = new Timer();                timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);                double ts = timespan * 60000;                timer.Interval = ts;                if (DateDiff(remindtime, nowtime) == advancetime)                {                    Page.RegisterStartupScript("", "<script>alert('" + temp + "，行动主题：" + title + "。离您的预约时间还有" + advancetime + "分钟，请查看日程安排！')</script>");                }                if (DateDiff(remindtime, nowtime) < advancetime)                {                    timer.Enabled = true;                    timer.Start();                }            }        }    }     //这是2个时间差的方法    private int DateDiff(DateTime DateTime1, DateTime DateTime2)    {        int dateDiff = 0;        try        {            TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);            TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);            TimeSpan ts = ts1.Subtract(ts2).Duration();            dateDiff = ts.Minutes;        }        catch(Exception ex)        {            Page.RegisterStartupScript("", "<script>alert('"+ex.Message+"')</script>");        }        return dateDiff;    }    private void timer_Elapsed(object source, ElapsedEventArgs e)    {        Page.RegisterStartupScript("", "<script>alert('离您的预约时间就快到了！请查看日程表！')</script>");    }