C# 自定义高精度定时器

class ManualTimer //自定义计时器
{
    public delegate void ManualTimerEventHandler(object sender);
    public event ManualTimerEventHandler Tick;

    private uint currentTime, nextTickTime, tickTime;
    private int interval;
    public int Interval
    {
        get { return interval; }
        set
        {
            interval = value;
            tickTime = (uint)interval;
        }
    }
    private bool running = false;
    private Thread thread;
    public bool isRun
    {
        get { return running; }
    }

    [DllImport("kernel32")]
    private static extern uint GetTickCount();
    [DllImport("winmm")]
    static extern uint timeGetTime();
    [DllImport("winmm")]
    static extern void timeBeginPeriod(int t);
    [DllImport("winmm")]
    static extern void timeEndPeriod(int t);

    public ManualTimer()
    {

    }

    private void Run1()//GetTickCount()
    {
        currentTime = GetTickCount();
        nextTickTime = currentTime + tickTime;
        while (running)
        {
            while (currentTime < nextTickTime)
            {
                Thread.Sleep(1);
                currentTime = GetTickCount();
            }
            nextTickTime = currentTime + tickTime;
            if (Tick != null)
            {
                Tick(this);
            }
        }
    }
    private void Run()//timeGetTime()
    {
        timeBeginPeriod(1);
        currentTime = timeGetTime();
        nextTickTime = currentTime + tickTime;
        while (running)
        {
            while (currentTime < nextTickTime)
            {
                Thread.Sleep(1);
                currentTime = timeGetTime();
                timeEndPeriod(1);
            }
            nextTickTime = currentTime + tickTime;
            if (Tick != null)
            {
                Tick(this);
            }
        }
    }

    public void Start()
    {
        running = true;
        thread = new Thread(Run);
        thread.Priority = ThreadPriority.Highest;
        thread.Start();
    }
    public void Stop()
    {
        running = false;
        thread.Abort();
    }

    ~ManualTimer()
    {
        // running = false;
        // timerThread.Abort();

        if (running)
        {
            Stop();
        }

    }
}