Timer计时不准确的解决方案 每次都重新调整，修正误差

http://stackoverflow.com/questions/29722838/system-timers-timer-steadily-increasing-the-interval

需要在计时器每次运行后，修正计时器的间隔

通过DateTime的Tick来处理     不过这个修正貌似有点不准

public class Meter
    {
        private Timer ReadingTime;
        private DateTime NextTickTimeWholeSeconds;

        public Meter()
        {
            DateTime now = DateTime.Now;
            NextTickTimeWholeSeconds = new DateTime(now.Ticks - (now.Ticks % TimeSpan.TicksPerSecond), now.Kind);

            ReadingTime = new Timer();
            ReadingTime.Elapsed += new ElapsedEventHandler(PerformReading);
            ReadingTime.Interval = GetTimeToNextSecond();
        }

        public void StartMeter()
        {
            ReadingTime.Start();
        }

        public void StopMeter()
        {
            ReadingTime.Stop();
        }

        private double GetTimeToNextSecond()
        {
            NextTickTimeWholeSeconds = NextTickTimeWholeSeconds.AddSeconds(1);
            var interval = NextTickTimeWholeSeconds - DateTime.Now;
            return interval.Milliseconds < 1 ? GetTimeToNextSecond() : interval.Milliseconds;
        }

        /// <summary>
        /// 定时处理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PerformReading(object sender, ElapsedEventArgs e)
        {
            Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"));
            //Console.WriteLine("Performing reading: " + DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second + "." + DateTime.Now.Millisecond);
            ReadingTime.Interval = GetTimeToNextSecond();
        }
    }

 

C# + high resolution timer

I found a solution to this problem in the following blog:http://web.archive.org/web/20110910100053/http://www.indigo79.net/archives/27#comment-255

It tells you how to use the multimedia timer to have a timer with high frequency. It is working just fine for me!!!

上面的链接无效，在评论中找到这个http://svn.the-starport.net/utfeditor/UTFEditor/MultimediaTimer.cs

主要是通过调用winmm.dll来计时