using System;using System.Collections.Generic;using System.Text;using System.IO.Ports;using System.Threading;namespace RequestResponse001CS{    // 拨号器管理者    public class ModemManager    {        //已经安装了拨号器的串口对象        private List
      
        modemCollection = null;        // ModemCollection 的调度编号        private int modemNumber = -1;        //当前有无可使用的串口拨号器        private bool hasEnabled = false;        //串口拨号器的重新检测间隔分钟        private int reCheckMinutes = 30; //默认30分钟        //波特率配置列表        private Dictionary
       
         boudrateCollection = null;        //获得当前时间        private DateTime checkDateTime = DateTime.Now;        private ManagerCallback m_callBack = null; //返回委托事件        #region 委托        public delegate void ManagerCallback(String message);        //委托返回信息        private void ReturnMessage(String message)        {            if (message.Length > 0 && m_callBack != null)            {                m_callBack(message);            }        }        #endregion                #region 属性        public List
        
          ModemCollection        {            get { return modemCollection; }        }        //可使用的拨号器个数        public int EnabledCount        {            get            {                if (modemCollection == null) return 0;                else return modemCollection.Count;            }        }        public bool HasEnabled        {            get { return hasEnabled; }            //set { hasPort = value; }        }        //波特率配置列表        public Dictionary
         
           BoudrateCollection        {            get { return boudrateCollection; }            set { boudrateCollection = value; }        }        //串口拨号器的重新检测间隔分钟        public int ReCheckMinutes        {            get { return reCheckMinutes; }            set { reCheckMinutes = value; }        }        #endregion        #region  构造方法        public ModemManager(ManagerCallback callBack)         {            if (callBack != null) m_callBack = callBack;        }        public ModemManager(int reCheckMinutes, ManagerCallback callBack)        {            this.ReCheckMinutes = reCheckMinutes;            if (callBack != null) m_callBack = callBack;        }        public ModemManager(Dictionary
          
            boudrateCollection, ManagerCallback callBack)        {            this.BoudrateCollection = boudrateCollection;            if (callBack != null) m_callBack = callBack;        }        public ModemManager(Dictionary
           
             boudrateCollection, int reCheckMinutes,ManagerCallback callBack) { this.BoudrateCollection = boudrateCollection; this.ReCheckMinutes = reCheckMinutes; if (callBack != null) m_callBack = callBack; } #endregion 构造方法 #region 调度方法 /// 
            
 /// 调用拨号器 /// 
 /// 
             public void ModemInvoking(string cardNumber) { if (hasEnabled == false) { // 获得串口上已经安装了拨号器的对象 this.GetModemCollection(); } if (hasEnabled == true) { this.ModemCalling(cardNumber); } //定期检测串口列表 if (checkDateTime.AddMinutes(ReCheckMinutes) <= DateTime.Now) { // 重新获得串口上已经安装了拨号器的对象 this.GetModemCollection(); checkDateTime = DateTime.Now; } } /// 
            
 /// 获得串口上安装了拨号器的对象 /// 
 public void GetModemCollection() { if (modemCollection == null) { modemCollection = new List
            
             (); } int modemCollectionCount = modemCollection.Count; //步骤一： 重新获得所有的串口名称(列表) string[] portNames = SerialPort.GetPortNames(); //如果当前串口数目 > 正在使用的COM if (portNames.Length > modemCollectionCount) { ReturnMessage("正在检测可以使用的拨号器..."); //测试使用 foreach (string portName in portNames) { //当前串口名是否存在拨号列表中 bool existModem = false; if (modemCollectionCount > 0) { existModem = modemCollection.Exists(delegate(Modem myModem) { return portName == myModem.PortName; }); } //如果当前串口名不存在拨号列表中，则重新检测！ if (!existModem) { ReturnMessage("正在检测：" + portName); //测试使用 AddModemToCollection(portName); } } } // 判断当前计算机有无可使用串口端 hasEnabled = modemCollection.Count <= 0 ? false : true; } /// 
             
 /// 对拨号器的调度使用 /// 
 private void ModemCalling(string cardNumber) { if (modemCollection == null) return; // 等待线程进入 Monitor.Enter(modemCollection); Modem modem = null; try { //获得当前调用的串口对象的索引号 int number = GetModemNumber(); if (number >= 0) //判断是否存在拨号器 { modem = modemCollection[number]; if (modem != null) // && !modem.IsWorking) { ReturnMessage(string.Format("{0} 正在对 SIM卡：{1} 进行拨号...", modem.PortName,cardNumber)); modem.DialingNumberToModem(cardNumber); //对 SIM 进行拨号，唤醒上位机 } } else { ReturnMessage("没有可使用的拨号器，重新对端口进行检测..."); this.GetModemCollection(); } } catch { //再一次检查该 COM 能否使用！ (范工提议) if (modem != null) { string portName = modem.PortName; modemCollection.Remove(modem); //从可用列表去除 modem.CloseModem(); AddModemToCollection(portName); } } finally { if (modemCollection != null) { // 通知其它对象 Monitor.Pulse(modemCollection); // 释放对象锁 Monitor.Exit(modemCollection); } } } /// 
             
 /// 获得对 ModemCollection 的调度编号 /// 
 /// 
              private int GetModemNumber() { lock (this) { if (modemNumber + 1 >= modemCollection.Count) { if (modemCollection.Count == 0) modemNumber = -1; else modemNumber = 0; } else { modemNumber++; } return modemNumber; } } /// 
             
 /// 添加 Modem 到 modemCollection /// 
 private void AddModemToCollection(string portName) { Modem myModem = null; //是否设置波特率？ if (boudrateCollection != null && boudrateCollection.ContainsKey(portName) && boudrateCollection[portName] != 0) { myModem = new Modem(portName, boudrateCollection[portName], ReturnMessage); } else { myModem = new Modem(portName, ReturnMessage); } bool hasModem = myModem.CheckPortExistModem(); if (hasModem) { modemCollection.Add(myModem); } else { myModem.CloseModem(); myModem = null; } } /// 
             
 /// 释放所有的串口资源 /// 
 public void CloseModemCollection() { if (modemCollection != null) { for (int i = 0; i < modemCollection.Count; i++) { modemCollection[i].CloseModem(); modemCollection[i] = null; } modemCollection = null; } if (boudrateCollection != null) { boudrateCollection = null; } } #endregion }}
            
           
          
         
        
       
      

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Threading;namespace RequestResponse001CS{    public partial class FormModemManager : Form    {        public FormModemManager()        {            InitializeComponent();        }        ModemManager ModemManager;        Thread thread;        private void FormModemManager_Load(object sender, EventArgs e)        {            ModemManager = new ModemManager(5, TakeControl);        }        public void TakeControl(string message)        {            if (this.InvokeRequired)            {                Modem.SetCallback d = new Modem.SetCallback(TakeControl);                this.Invoke(d, new object[] { message });            }            else            {                //MessageBox.Show(message);                this.txtMessageShow.Text = this.txtMessageShow.Text + message + "\r\n" ;                this.txtMessageShow.Select(this.txtMessageShow.Text.Length, 0);                this.txtMessageShow.ScrollToCaret();             }        }        private void FormModemManager_FormClosing(object sender, FormClosingEventArgs e)        {            if (thread != null)            {                thread.Abort();            }        }        private void Button_Run_Click(object sender, EventArgs e)        {            thread = new Thread(new ThreadStart(Run));            thread.Start();        }        private void Run()        {            try            {                // 获得串口上已经安装了拨号器的对象                ModemManager.GetModemCollection();                if (ModemManager.HasEnabled == false)                {                    TakeControl("当前计算机无可使用的串口拨号器！");                }                else                {                    TakeControl("当前计算机可使用的拨号器如下：");                    List
      
        modemCollection = ModemManager.ModemCollection;                    for (int i = 0; i < modemCollection.Count; i++)                    {                        Modem modem = modemCollection[i];                        TakeControl(string.Format("端口名：{0}，波特率：{1}",                                    modem.PortName, modem.Boudrate.ToString()));                    }                }                while (ModemManager.HasEnabled)                {                    // 调用拨号器                    if (string.IsNullOrEmpty(txtCardNumber.Text.Trim()))                    {                        ModemManager.ModemInvoking("135xxxxxxxx"); // SIM 卡号                    }                    else ModemManager.ModemInvoking(txtCardNumber.Text.Trim());                    Thread.Sleep(5000);                }                TakeControl("程序运行结束！");            }            finally            {                // 释放所有串口资源组件                ModemManager.CloseModemCollection();            }        }        //运行停止        private void Button_Stop_Click(object sender, EventArgs e)        {            if (ModemManager != null)            {                ModemManager.CloseModemCollection();            }        }    }}