我有一台RFID设备通过端口COM1连接到我的笔记本电脑(确认正确,我使用设备管理器)。但是,当我用C#语言运行这些代码时。它给了我一个例外访问端口“COM1”被拒绝。有人可以帮我解决这个问题吗?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;
namespace Testing1
{
public class Testing1
{
public static SerialPort iSerialPort = new SerialPort();
static int Main()
{
string strException = string.Empty;
string strComPort = "COM1";
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 = 200;
iSerialPort.DataBits = 8;
iSerialPort.Parity = Parity.None;
iSerialPort.StopBits = StopBits.One;
iSerialPort.Open();
}
catch (System.Exception ex)
{
strException = ex.Message;
return -1;
}
return 0;
}
}
}