1 public void FICCard_DataReceived(object sender, SerialDataReceivedEventArgs e)
 2         {
 3             if (ComPort.Closing)//如果正在关闭，则退出监听
 4             {
 5                 return;
 6             }
 7             try
 8             {
 9                 this.Invoke((EventHandler)(delegate
10                 {
11                     ComPort.Listening = true;
12                     string buf = ComPort.getInstance().ReadExisting();
13                     result = buf.Replace("\r", "\r\n");
14                 }));
15             }
16             finally
17             {
18                 ComPort.Listening = false;
19             }           
20         }

 1 /// <summary>
 2       /// 连接读卡器
 3       /// </summary>
 4       /// <param name="sender"></param>
 5       /// <param name="e"></param>
 6         private void myButton1_Click(object sender, EventArgs e)
 7         {
 8          ComPort.sendData(Order.ic_instruction.ic_connect_order);
 9           if (result == "OK")
10             {
11                 textBox2.Text = "读卡器连接成功";
12                 isConnected = true;
13             }
14             else
15             {
16                 textBox2.Text = "读卡器连接失败，请检查串口。";
17             }
18             result = "";
19         }