使用C＃的RFID应用。无法读取数据的原因

Question

我已经设法使用下面的代码连接到RFID USB读卡器......但是，每当我的标签放在读卡器附近时。它不运行该函数并产生＆＃34;读取数据...＆＃34;的输出。任何人都可以为我提供有效的RFID编码吗？以下是我的代码。

        using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Net;
    using System.Net.Sockets;
    using System.IO.Ports;
    using System.Threading;
    using System.Windows.Forms;
    using Gtk;

    namespace Testing1
    {
        public class Testing1
        {
            public static SerialPort iSerialPort = new SerialPort();

            static int Main() 
            {
                string strException = string.Empty;
                string strComPort = "COM17";
                int nBaudrate=Convert.ToInt32(9600);

                int nRet = OpenCom(strComPort, nBaudrate, out strException);
                if (nRet != 0)
                {
                    string strLog = "Connect reader failed, due to: " + strException; 
                    Console.WriteLine(strLog);
                    //return;
                }
                else
                {
                    string strLog = "Reader connected " + strComPort + "@" + nBaudrate.ToString();
                    Console.WriteLine(strLog);
                }

                Console.WriteLine("Press any key to exit.");
                Console.ReadKey();

                iSerialPort.Close();
                return 0;
            }

            public static int OpenCom(string strPort, int nBaudrate, out string strException)
            {

                strException = string.Empty;

                if (iSerialPort.IsOpen)
                {
                    iSerialPort.Close();
                }

                try
                {
                    iSerialPort.PortName = strPort;
                    iSerialPort.BaudRate = nBaudrate;
                    iSerialPort.ReadTimeout = 3000;
                    iSerialPort.DataBits = 8;
                    //iSerialPort.Parity = Parity.None;
                    //iSerialPort.StopBits = StopBits.One;
                    //iSerialPort.Handshake = Handshake.None;
                    iSerialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);
                    iSerialPort.Open();
                }
                catch (System.Exception ex)
                {
                    strException = ex.Message;
                    return -1;
                }



                return 0;
            }

            private static void DataReceivedHandler(object sender,SerialDataReceivedEventArgs e)
            {
                SerialPort sp = (SerialPort)sender;
                string indata = sp.ReadExisting();
                Console.WriteLine("Data Received:");
                Console.Write(indata);
            }
        }
    }