【求教帖】C# 程序执行过程中的未响应问题

public System.Timers.Timer Pretimer;
private void InitTimer()
        {
            //设置定时间隔(毫秒为单位)
            int interval = 500;
            Pretimer = new System.Timers.Timer(interval);
            //设置执行一次（false）还是一直执行(true)
            Pretimer.AutoReset = true;
            //设置是否执行System.Timers.Timer.Elapsed事件
            Pretimer.Enabled = false;
            //绑定Elapsed事件
            Pretimer.Elapsed += new System.Timers.ElapsedEventHandler(TimerUp);
        }
private void TimerUp(object sender, System.Timers.ElapsedEventArgs e)
        {
            try
            {
                if (this.IsHandleCreated)
                {
                    systemCounter += 1;
                    this.Invoke(new PreCureHmi(PreCureDisplay));
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.WriteLine(ex.StackTrace);
            }
        }