请帮忙吗

像串口似乎是一个反复无常的孩子.

C#,WinCE 5.0,HP瘦客户端,Compact框架2.0

private void WeighSample()
    {
        this._processingDone = false;
        this._workerThread = new Thread(CaptureWeight);
        this._workerThread.IsBackground = true;
        this._workerThread.Start();
    } //end of WeighSample()


    private void CaptureWeight()
    {
         globalCounter++;
         string value = "";


          while (!this._processingDone)
          {
              try
              {

                 value = this._sp.ReadLine();

                  if (value != "")
                  {
                      if (value == "ES")
                      {
                          _sp.DiscardInBuffer();
                          value = "";
                      }
                      else
                      {
                          this.Invoke(this.OnDataAcquiredEvent,new object[] { value });
                      }
                  }
              }
              catch (TimeoutException)
              {
                  //catch it but do nothing
              }
              catch
              {
                  //reset the port here?
                  MessageBox.Show("some other than timeout exception thrown while reading serial port");
              }
          }


    } //end of CaptureWeight()

需要注意的是我的应用程序是当光标跳到文本框时启动线程(weightSample).这样做的原因是重量也可以手动输入(部分req的).所以我不提前知道用户是否要在平衡上按PRINT或键入重量.在获取数据后的任何一种情况下,我退出工作线程.另外请注意,我没有使用串口事件DataReceived,因为我被告知不可靠.

任何意见/想法欢迎.这是我第一次使用串口.