代码实现：
MailSmtp ms = new MailSmtp("smtp.qq.com","","xxxx");
//可选参数
ms.SetCC("[email protected]");//抄送可以多个
ms.SetBC("[email protected]");//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("[email protected]", "test", "[email protected]", "哈哈", "哈哈", Server.MapPath("~/Test.dll"));
//输出结果
Response.Write(ms.Result);封装类：
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
/// ** 使用说明：http://www.cnblogs.com/sunkaixuan/p/4562147.html
/// </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 > )
{
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 > )
{
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 > )
{
foreach (string b in this._bcc)
{
message.Bcc.Add(b);
}
}
if (this._cc != null && this._cc.Length > )
{
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; }
} }