C#通用邮件发送类分享

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net.Mail;using System.Web;using System.Net;using System.Text.RegularExpressions;using System.Net.Sockets;using System.IO;using System.Collections;using System.Threading;namespace Com.Web{  /// <summary>  /// 邮箱类  /// </summary>  public class CheckEmailInfo  {    public string server { get; set; }//服务器    public string user { get; set; }//用户名    public string pwd { get; set; }//密码  }  /// <summary>  /// SendEmail通用类，通过smtp服务器发送邮件  /// </summary>  public class SendEmail  {    public Dictionary<string, string> smtpServer;    public Dictionary<string, string> popServer;    public SendEmail()    {           IniSmtpServer();      IniPopServer();    }    /// <summary>    /// 初始化常用smtpServer，用于绑定下拉选择菜单    /// </summary>    private void IniSmtpServer()    {      smtpServer = new Dictionary<string, string>();      smtpServer.Add("网易163邮箱", "smtp.163.com");      smtpServer.Add("网易vip.163邮箱", "smtp.vip.163.com");      smtpServer.Add("网易126邮箱", "smtp.126.com");      smtpServer.Add("网易188邮箱", "smtp.188.com");      smtpServer.Add("新浪邮箱", "smtp.sina.com");      smtpServer.Add("雅虎邮箱", "smtp.mail.yahoo.com");      smtpServer.Add("搜狐邮箱", "smtp.sohu.com");      smtpServer.Add("TOM邮箱", "smtp.tom.com");      smtpServer.Add("Gmail邮箱", "smtp.gmail.com");      smtpServer.Add("QQ邮箱", "smtp.qq.com");      smtpServer.Add("QQ企业邮箱", "smtp.biz.mail.qq.com");      smtpServer.Add("139邮箱", "smtp.139.com");      smtpServer.Add("263邮箱", "smtp.263.com");          }    /// <summary>    /// 初始化常用popServer，用于绑定下拉选择菜单    /// </summary>    private void IniPopServer()    {      popServer = new Dictionary<string, string>();      popServer.Add("网易163邮箱", "pop3.163.com");      popServer.Add("网易vip.163邮箱", "pop3.vip.163.com");      popServer.Add("网易126邮箱", "pop3.126.com");      popServer.Add("网易188邮箱", "pop3.188.com");      popServer.Add("新浪邮箱", "pop3.sina.com");      popServer.Add("雅虎邮箱", "pop3.mail.yahoo.com");      popServer.Add("搜狐邮箱", "pop3.sohu.com");      popServer.Add("TOM邮箱", "pop.tom.com");      popServer.Add("Gmail邮箱", "pop.gmail.com");      popServer.Add("QQ邮箱", "pop.qq.com");      popServer.Add("QQ企业邮箱", "pop.biz.mail.qq.com");      popServer.Add("139邮箱", "pop.139.com");      popServer.Add("263邮箱", "pop.263.com");    }    /// <summary>    /// 发送邮件功能    /// </summary>    /// <param name="fromEmail">登录邮箱</param>    /// <param name="password">登录密码</param>    /// <param name="user">邮件昵称</param>    /// <param name="title">邮件标题</param>    /// <param name="toEmail">邮件地址</param>    /// <param name="email">邮件内容</param>    /// <param name="smtpServer">smtp服务器</param>    public bool SendMessage(string fromEmail,string password, string user, string title, string toEmail, string email,string smtpServer)    {      try      {               SmtpClient smtp = new SmtpClient(); //实例化一个SmtpClient        smtp.DeliveryMethod = SmtpDeliveryMethod.Network; //将smtp的出站方式设为 Network        smtp.EnableSsl = false;//smtp服务器是否启用SSL加密        smtp.Host = smtpServer;//指定 smtp 服务器                  smtp.Credentials = new NetworkCredential(fromEmail, password);        MailMessage mm = new MailMessage(); //实例化一个邮件类        mm.Priority = MailPriority.High; //邮件的优先级，分为 Low, Normal, High，通常用 Normal即可               mm.From = new MailAddress(fromEmail, user, Encoding.GetEncoding(936));        mm.CC.Add(new MailAddress(toEmail, "", Encoding.GetEncoding(936)));        mm.Subject = title; //邮件标题        mm.SubjectEncoding = Encoding.GetEncoding(936);        mm.IsBodyHtml = true; //邮件正文是否是HTML格式mm.BodyEncoding = Encoding.GetEncoding(936);        mm.Body = email;        smtp.Send(mm);        return true;           }      catch      {        return false;      }    }    /// <summary>    /// 检查邮箱是否正确的委托    /// </summary>    delegate bool MyDelegate(object checkEmailInfo);    /// <summary>    /// 利用异步方式检查邮箱账号和密码是否正确    /// </summary>    public bool CheckUser(string server, string user, string pwd)    {            MyDelegate myDelegate = new MyDelegate(CheckUser);      CheckEmailInfo checkEmailInfo = new CheckEmailInfo();      checkEmailInfo.server = server;      checkEmailInfo.user = user;      checkEmailInfo.pwd = pwd;      IAsyncResult result = myDelegate.BeginInvoke(checkEmailInfo, null, null);      Thread.Sleep(1000);//主线程1秒后检查异步线程是否运行完毕      if (result.IsCompleted)      { return myDelegate.EndInvoke(result); }//如果错误的邮箱和密码，函数将会运行很慢      else      { return false; }    }       /// <summary>    /// 判断用户邮箱账号和密码是否正确    /// </summary>    /// <param name="server">PopServer地址</param>    /// <param name="user">用户名</param>    /// <param name="pwd">密码</param>    private bool CheckUser(object checkEmailInfo)    {           CheckEmailInfo checkInfo = (CheckEmailInfo)checkEmailInfo;      TcpClient sender = new TcpClient(checkInfo.server, 110);//pop协议使用TCP的110端口      Byte[] outbytes;      NetworkStream ns;      StreamReader sr;      string input;      string readuser = string.Empty;      string readpwd = string.Empty;      try      {        ns = sender.GetStream();        sr = new StreamReader(ns);        sr.ReadLine();        //检查用户名和密码        input = "user " + checkInfo.user+ "/r/n";        outbytes = Encoding.ASCII.GetBytes(input.ToCharArray());        ns.Write(outbytes, 0, outbytes.Length);               readuser = sr.ReadLine();        input = "pass " + checkInfo.pwd + "/r/n";        outbytes =Encoding.ASCII.GetBytes(input.ToCharArray());        ns.Write(outbytes, 0, outbytes.Length);              readpwd = sr.ReadLine();                      if (readuser.Substring(0, 3) == "+OK" && readpwd.Substring(0, 3) == "+OK")        { return true; }        else        { return false; }      }      catch      {        return false;      }    }        /// <summary>    /// 判断邮箱格式是否正确    /// </summary>    /// <param name="email">邮箱地址</param>    public bool IsEmail(string email)    {       string paterner = @"/w+([-+.']/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*";      if (!Regex.IsMatch(email, paterner))      { return false;}      else      {return true;}         }   }}