C#中计时器的简单实现方法示例

startTime = DateTime.Now;
DispatcherTimer dt = new DispatcherTimer();
dt.Interval = new TimeSpan(0, 0, 1);
dt.Tick += new EventHandler(dt_Tick);//调用函数
dt.Start();
void dt_Tick(object sender, EventArgs e)
{
   timeSpan = DateTime.Now.Subtract(startTime);
   //用TimeSpan来格式化时间
   timer1.Content = string.Format("{0:00}:{1:00}:{2:00}", (int)timeSpan.TotalHours,timeSpan.Minutes, timeSpan.Seconds);
   //用DateTime来格式化时间
   timer2.Content = String.Format("{0:HH:mm:ss}", new DateTime(timeSpan.Ticks));
}