问7-8小时后OpenNETCF.Timers.Timer2和System.threading.timer计时错误事件调用

EN

public partial class Form1 : Form
{
    private OpenNETCF.Timers.Timer2 mTimer2;
    private DateTime mLastSampleTime;
    private Int32 Interval;
    private Double ActualInterval;
    private long ActualTickInterval;`enter code here`
    StreamWriter file;
    Boolean firstRun = true;

    //private Timer sysTimer;

    public Form1()
    {
        InitializeComponent();
        /// <summary>
        /// Timer object for Windows CE environment.
        /// </summary>
        /// 

        // This text is always added, making the file longer over time
        // if it is not deleted.
        file = System.IO.File.AppendText("TimerLog.txt");




        mTimer2 = new OpenNETCF.Timers.Timer2(1000);//1000 for actual test
        mTimer2.AutoReset = true;
        mTimer2.Elapsed += Timer2Event;
        mTimer2.Start();
        file.WriteLine("TImer Started");

    }


    private void Timer2Event(object sender,
        OpenNETCF.Timers.ElapsedEventArgs e)
    {
         try
        {

            DateTime now = DateTime.UtcNow;

            if (!firstRun) //do not calculate difference if first run
            {
                //ActualInterval = ((now - mLastSampleTime).TotalMilliseconds);//Difference between previous timestamp and current (in milliseconds)
                ActualTickInterval = ((now - mLastSampleTime).Ticks);//Difference between previous timestamp and current (in ticks)
                Interval = Convert.ToInt32((now - mLastSampleTime).TotalSeconds);//Interval as used in LAMP code

                if (Interval >= 2) file.Write("-------->");//if Interval is 2 seconds, Mark it.
                file.Write("UTC Now: " + now.ToString() +" Current Tick: "+now.Ticks.ToString() +" Actual Interval: " + ActualInterval + " Actual Tick Difference: "+ActualTickInterval.ToString()+" Deviation (Ideal=0) "+(ActualTickInterval-10000000).ToString()+"\r\n");
                file.Flush();    
            }
            else
            {
                firstRun = false;
            }
             mLastSampleTime = now;
        }
        catch (Exception exp)
        {   
            file.Write("Logging Failed " + DateTime.UtcNow.ToString() + " exception: " + exp.Message+"\r\n");
        }
    }



    }

}