wpf 定时器应用，在界面动态刷新时间

DispatcherTimer = new DispatcherTimer();
Timer.Tick += Timer_Tick;
Timer.Interval = TimeSpan.FromSeconds(1);
Timer.Start();


private void Timer_Tick(object sender, EventArgs e)
        {
            //todo
            //获取温度的数值

            //获取年月日
            string dt_ymd = DateTime.Now.ToLongDateString();
            this.LbYearAndMonth.Content = dt_ymd;
            //获取几时几分
            string dt_hm = DateTime.Now.ToShortTimeString();
            this.LbHourAndMin.Content = dt_hm;

            //获取今天是星期几
            string[] Day = new string[] { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
            string week = Day[Convert.ToInt32(DateTime.Now.DayOfWeek.ToString("d"))].ToString();
            this.LbWeekday.Content = week;
        }