獲取串口數據 (C#)

2. 效果圖 如下

3. 關鍵代碼
[csharp] 
private void buttonOpenClose_Click(object sender, EventArgs e) 
      { 
          try 
          { 
              labmsg.Text = ""; 
              //根據當前串口對象，來判斷操作 
              if (comm.IsOpen) 
              { 
                  //打開時點擊，則關閉串口 
                  comm.Close(); 
              } 
              else 
              { 
                  //關閉時點擊，則設置好端口，波特率後打開 
                  comm.PortName = comboPortName.Text; 
                  comm.BaudRate = int.Parse(comboBaudrate.Text); 
                  try 
                  { 
                      comm.Open(); 
                  } 
                  catch (Exception ex) 
                  { 
                      //捕獲到異常信息，創建一個新的comm對象，之前的不能用了。 
                      comm = new SerialPort(); 
                      //現實異常信息給客戶。 
                      MessageBox.Show(ex.Message); 
                  } 
              } 
              //設置按鈕的狀態 
              buttonOpenClose.Text = comm.IsOpen ? "關閉串口" : "打開串口"; 
              buttonSend.Enabled = comm.IsOpen; 
          } 
          catch (Exception ex) 
          { 
 
              labmsg.Text = "ERR"; 
          } 
      }