C# 邮箱mail 发送类

没有牛b的设计模式，代码精练精练实用，功能齐全，调用简单 。。全全完完为码农考虑

mailsmtp ms = new mailsmtp("smtp.qq.com","1215247044","xxxx");
     //可选参数
     ms.setcc("[e-mail]");//抄送可以多个
     ms.setbc("[e-mail]");//暗送可以多个
     ms.setishtml(true);//默认:true
     ms.setencoding(system.text.encoding.utf8);//设置格式 默认utf-8
     ms.setisssl(true);//是否ssl加密 默认为false
     //调用函数
     bool issuccess = ms.send("[e-mail]", "test", "[e-mail]", "哈哈", "哈哈", server.mappath("~/test.dll"));
     //输出结果
     response.write(ms.result); 
　　

代码：

using system;
using system.io;
using system.web.ui.webcontrols;
using system.text;
using system.net.mail;
using system.net;
using system.linq;
using system.text.regularexpressions;
namespace syntacticsugar
{
  /// <summary>
  /// ** 描述：邮件发送
  /// ** 创始时间：2015-6-8
  /// ** 修改时间：-
  /// ** 作者：sunkaixuan
  /// </summary>
  public class mailsmtp
  {
    /// <summary>
    /// 设置邮件编码类型
    /// </summary>
    /// <param name="contentencoding"></param>
    public void setencoding(encoding contentencoding)
    {
      this._encoding = contentencoding;
    }
    /// <summary>
    ///设置邮件正文是否为 html 格式 
    /// </summary>
    /// <param name="ishtml"></param>
    public void setishtml(bool ishtml)
    {
      this._ishtml = ishtml;
    }
    /// <summary>
    /// 抄送
    /// </summary>
    /// <param name="cc"></param>
    public void setcc(params string[] cc)
    {
      this._cc = cc;
    }
    /// <summary>
    /// 暗送
    /// </summary>
    /// <param name="cc"></param>
    public void setbc(params string[] bc)
    {
      this._bcc = bc;
    }
    /// <summary>
    /// 是否ssl加密
    /// </summary>
    /// <param name="isssl"></param>
    public void setisssl(bool isssl)
    {
      this._smtp.enablessl = isssl;
    }
    /// <summary>
    /// 构造函数
    /// </summary>
    /// <param name="host"></param>
    /// <param name="username">邮件账号</param>
    /// <param name="password">密码</param>
    public mailsmtp(string host, string username, string password)
    {
      this._smtp.host = host;
      this._smtp.port = 0x19;
      this._smtp.enablessl = false;
      this._ishtml = true;
      this._encoding = encoding.utf8;
      if (string.isnullorempty(username) || string.isnullorempty(password))
      {
        this._smtp.usedefaultcredentials = false;
      }
      else
      {
        this._smtp.credentials = new networkcredential(username, password);
      }
    }
    /// <summary>
    /// 发送邮件
    /// </summary>
    /// <param name="from">发件人邮件地址</param>
    /// <param name="sender">发件人显示名称</param>
    /// <param name="to">收件人地址</param>
    /// <param name="subject">邮件标题</param>
    /// <param name="body">邮件正文</param>
    /// <param name="file">附件地址数组</param>
    /// <returns>bool 是否成功 </returns>
    public bool send(string from, string sender, string to, string subject, string body, params string[] file)
    {
      return send(from, sender, new string[] { to }, subject, body, file);
    }
    /// <summary>
    /// 发送邮件
    /// </summary>
    /// <param name="from">发件人邮件地址</param>
    /// <param name="sender">发件人显示名称</param>
    /// <param name="to">收件人地址</param>
    /// <param name="subject">邮件标题</param>
    /// <param name="body">邮件正文</param>
    /// <param name="file">附件地址数组</param>
    /// <returns>bool 是否成功 </returns>
    public bool send(string from, string sender, string[] to, string subject, string body, params string[] file)
    {
      string mailreg = @"^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$";
      if (to == null)
      {
        throw new argumentnullexception("mailsmtp.send.to");
      }
      if (to.any(oit => !regex.ismatch(oit + "", mailreg)))
      {
        this.result = "收件人地址不合法";
        return false;
      }
      if (_bcc != null && _bcc.length > 0)
      {
        if (_bcc.any(oit => !regex.ismatch(oit + "", mailreg)))
        {
          this.result = "暗送人地址不合法";
          return false;
        }
      }
      if (_cc != null && _cc.length > 0)
      {
        if (_cc.any(oit => !regex.ismatch(oit + "", mailreg)))
        {
          this.result = "抄送人地址不合法";
          return false;
        }
      }
      mailmessage message = new mailmessage();
      // 创建一个附件对象
      foreach (var r in file)
      {
        attachment objmailattachment;
        objmailattachment = new attachment(r);//发送邮件的附件
        message.attachments.add(objmailattachment);
      }
      message.from = new mailaddress(from, sender);
      message.subject = subject;
      message.subjectencoding = this._encoding;
      message.body = body;
      message.bodyencoding = this._encoding;
      message.isbodyhtml = this._ishtml;
      message.priority = mailpriority.normal;
      foreach (string str in to)
      {
        message.to.add(str);
      }
      if (this._bcc != null && this._bcc.length > 0)
      {
        foreach (string b in this._bcc)
        {
          message.bcc.add(b);
        }
      }
      if (this._cc != null && this._cc.length > 0)
      {
        foreach (string c in this._cc)
        {
          message.cc.add(c);
        }
      }
      try
      {
        this._smtp.send(message);
        return true;
      }
      catch (exception ex)
      {
        console.writeline(ex.message);
      }
      return false;
    }
    private smtpclient _smtp = new smtpclient();
    private encoding _encoding { get; set; }
    private bool _ishtml { get; set; }
    private string[] _cc { get; set; }
    private string[] _bcc { get; set; }
    /// <summary>
    /// 获取发送结果，成功则为空
    /// </summary>
    public string result { get; private set; }
  }
 
} 

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