事件中的調度程序只會調用一次C＃

Question

我正在寫一個程序來監視從串口（從一個arduino）發送的命令，並將擊鍵發送到各種其他程序。

我已經在我的事件中放置了一個調度程序，但它只會運行一次... 我已經遍歷代碼，它在第一次運行時一直運行，但不是第二次運行。

private void portReadEvent(object sender, SerialDataReceivedEventArgs args) 
     { //break here 
      Action dump = delegate() 
      { 
       dumpInfoText(serialPort.ReadExisting()); 
      }; //create my deligate 

      txt_portInfo.Dispatcher.Invoke(dump); //run dispatcher 

     } 

     private void dumpInfoText(string text) 
     { 
      string completeCommand = ""; 
      foreach (char C in text) 
      { 
       if (serDump.Length <=8 && (C != (char)0x0A || C != (char)0x0D)) //check 
       { 
        serDump = serDump + C; //add char 
       } 
       if (serDump.Length == 8) //check to see if my info has a complete command (serDump is global) 
       { 
        completeCommand = serDump; //move to complete 
        serDump = ""; // reset dump 
        if (C == (char)0x0A || C == (char)0x0D) //dont add crlf 
        { 
         serDump = serDump + C; //add char 
        } 
       } 
       if (completeCommand.Length == 8) 
       { 
        txt_portInfo.Text = txt_portInfo.Text + completeCommand; //do something with it. 
       } 
      } 

Answer 1

啊，固定......不知道爲什麼。

private void portReadEvent(object sender, SerialDataReceivedEventArgs args) 
    { 
     txt_portInfo.Dispatcher.Invoke(new Action(() => {dumpInfoText(serialPort.ReadExisting());})); //run dispatcher 

    }