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("610262374@qq.com");//抄送可以多个 ms.SetBC("610262374@qq.com");//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("1215247044@qq.com", "test", "610262374@qq.com", "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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