高分 求一modem 拨号程序,要求是C#版

Question

呵呵.给我也来一份 谢谢
[email protected]
 UP 接分.

Answer 1

using System;
using System.Collections.Generic;
using System.Text;
using System.IO.Ports;
using System.Threading;namespace Rs232
{
    public class Modem
    {
        public struct AttachedModem
        {
            public string Port;
            public string ModemModel;
        }        private SerialPort _port;
        private string _pname = "";
        private int _boudrate = 0;
        private string _answer;
        private SetCallback _call = null;        public delegate void SetCallback(Modem modcall);        // COM端口
        public string PortNumber
        {
            get {return _pname ;}
            set {_pname=value ;}
        }        //端口波特率
        public string PortBoudrate
        {
            get {return _boudrate.ToString() ;}
            set {_boudrate=int.Parse(value) ;}
        }        // 默认波特率(只读)
        public virtual int DefaultBoudrate
        {
            get {return 9600;}
        }        //Modem应答命令(只读)
        public string ModemAnswer
        {
            get {return _answer ;}
        }        // First constructor
        public Modem(SerialPort prt, SetCallback c)
        {
            _call = c;
            _port = prt;
            _port.DataReceived+=new SerialDataReceivedEventHandler(this.DataReceived);
            if (_pname == "") _pname = Modem.FirstAttachedModem().Port ;
            if (_boudrate == 0) _boudrate = this.DefaultBoudrate ;
            OpenModem();
        }
        // Second constructor
        public Modem(SerialPort prt, string prtnum, SetCallback c)
        {
            _call = c;
            _port = prt;
            _port.DataReceived += new SerialDataReceivedEventHandler(this.DataReceived);
            this.PortNumber = prtnum;
            this.PortBoudrate = this.DefaultBoudrate.ToString();
            OpenModem();
        }        public Modem():this(new SerialPort(), null) { }        private void AnalyzeAnswer()
        {
            if (_answer.Length > 0 && _call!=null)
            {
                _call(this);
            }
        }        //打开
        private void OpenModem()
        {
            this.CloseModem();
            _port.PortName = _pname;
            _port.BaudRate = _boudrate;
            _port.Open();
            this.InitializeModem();
        }
        
        //关闭
        public void CloseModem() 
        {
           if (_port.IsOpen) _port.Close();
        }        //发送命令
        protected void SendCommandToModem(string command)
        {
            _answer = "";
            if (!_port.IsOpen) this.OpenModem();
            _port.Write(command);
        }        // Modem初始化，AT命令。 E0意思是不回显。
        protected virtual void InitializeModem()
        {
            this.SendCommandToModem("ATE0\r");
        }        // 查找制造商，AT命令I4
        public virtual void GetManufacturer()
        {
            this.SendCommandToModem("ATI4\r");
        }        // 查找产品编号，AT命令I0
        public virtual void GetProductId()
        {
            this.SendCommandToModem("ATI0\r");
        }        // 查找COM端口
        // 返回制造商信息，芯片版本号
        public static AttachedModem FirstAttachedModem()
        {
            AttachedModem am = new AttachedModem();
            SerialPort sp = new SerialPort();
            string port, answer;            for (int i = 1; i <= 8; i++)
            {
                port = "COM" + i.ToString();
                sp.PortName = port;
                sp.BaudRate = 9600;                try
                {
                    sp.Open();
                    if (sp.IsOpen)
                    {
                        sp.Write("ATE0\r");
                        Thread.Sleep(200);
                        answer = sp.ReadExisting().Replace("ATE0","").Trim().ToUpper();
                        if (answer == "OK")
                        {
                            sp.Write("ATI4I3\r");
                            Thread.Sleep(200);
                            answer = sp.ReadExisting().Trim().ToUpper().Replace("\r\nOK","").Trim().Replace("\r\n","");
                            am.Port = port;
                            am.ModemModel = answer;
                            sp.Close();
                            break;
                        }
                    }
                    if (sp.IsOpen) sp.Close();
                }
                catch (Exception) {}
            }
            return am;
        }        private void DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            _answer = _port.ReadExisting().Trim().Replace("\r\n\r\n","\r\n");
            this.AnalyzeAnswer();
        }
    }
}