求助C#中关于串口的操作

s32702 2009-08-24 09:10:04

代码如下：

Program.cs



using System;

using System.Collections.Generic;

using System.Windows.Forms;

using System.IO.Ports;

using System.Configuration;

using WYC.Common.OU;

using System.Data;

using System.Diagnostics;

using System.Threading;

using System.Web;



namespace WYC.WinApp

{



    internal static class Program

    { 

        /// <summary>

        /// 读卡

        /// </summary>

        /// <returns></returns>

        internal delegate void ReadCardHandler(CardInfo obj);



        internal static event ReadCardHandler ReadCard = null;



        /// <summary>

        /// 串口通信对象

        /// </summary>

        private static SerialPort c_Com = null;



        /// <summary>

        /// 应用程序的主入口点。

        /// </summary>

        [STAThread]

        static void Main()

        {

            Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);

            Application.EnableVisualStyles();

            Application.SetCompatibleTextRenderingDefault(false);



            AppInit();

            

            Application.Run(new frmMain());

            

             if (c_Com.IsOpen)

                c_Com.Close();



        }





        //异常

        static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)

        {

            MessageBox.Show(e.Exception.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);

            //throw new Exception("The method or operation is not implemented.");

        }



        /// <summary>

        /// 应用初始化

        /// </summary>

        static void AppInit()

        {

            try

            {

                //设置读卡器串口

                c_Com = new SerialPort();

                c_Com.PortName = "com1"; 

                c_Com.BaudRate = int.Parse(ConfigurationManager.AppSettings.Get("baudRate"));



                c_Com.DataReceived+=new SerialDataReceivedEventHandler(c_Com_DataReceived);



            }

            catch (UnauthorizedAccessException uae)

            {

                MessageBox.Show(uae.Message.ToString(), "警告1", MessageBoxButtons.OK, MessageBoxIcon.Information); 

            }

            catch (ArgumentException ae)

            {

                MessageBox.Show(ae.Message.ToString(), "警告2", MessageBoxButtons.OK, MessageBoxIcon.Information);

            }

            catch (System.IO.IOException ioe)

            {

                MessageBox.Show(ioe.Message.ToString(), "警告3", MessageBoxButtons.OK, MessageBoxIcon.Information); 

            }

            catch (InvalidOperationException ioec)

            {

                MessageBox.Show(ioec.Message.ToString(), "警告4", MessageBoxButtons.OK, MessageBoxIcon.Information); 

            }



        }



         static void c_Com_DataReceived(object sender, SerialDataReceivedEventArgs e)

        {  

            SerialPort com = sender as SerialPort;



            if (ReadCard != null)

            {

                CardInfo obj = new CardInfo();

                ReadCard(obj);

            }



            com.DiscardInBuffer();

        }

    }



}

frmMain.cs



using System;

using System.Data;

using System.Windows.Forms;

using System.IO.Ports;

using System.Web;

using System.Configuration;

using WYC.DataAccess.OU;

using WYC.Common.OU;

using System.Diagnostics;

using System.Threading;

namespace WYC.WinApp

{

    public partial class frmMain : Form

    {

        public frmMain()

        {

            

            InitializeComponent();

            

            Program.ReadCard += new Program.ReadCardHandler(OnReadCard);

        }



        public string UrlNum = String.Empty;

        public frmLogin fl = new frmLogin();



        void OnReadCard(CardInfo obj)

        {

            ReadCardHandler readcard = new ReadCardHandler(SetInfo);

            if (InvokeRequired)

            {

                try

                {

                    this.Invoke(readcard, new object[] { obj });

                }

                catch

                { }

            }

            else

            {

                SetInfo(obj);

            }

        }



        delegate void ReadCardHandler(CardInfo obj);



        void SetInfo(CardInfo obj)

        {

        }





         void c_Com_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)

        {

            SerialPort com = (sender as SerialPort);



            com.ReadTimeout = 1000;

            com.ReadLine(); 

        }

}