邮件发送类

  

    public class EmailHelper    {        #region 私有对象        private SmtpClient smtpClient = null;   //设置SMTP协议        private MailAddress mailAddressFrom = null; //设置发信人地址  当然还需要密码        private MailMessage mailMessage = null;        private string filePath = null;        #endregion        /// <summary>        /// 构造函数        /// </summary>        public EmailHelper(string host,string user,string pwd,string title, string port, string timeout, string filepath)        {            try            {                smtpClient = new SmtpClient();                ////指定SMTP服务名  例如QQ邮箱为 smtp.qq.com 新浪cn邮箱为 smtp.sina.cn等                //smtpClient.Host = ConfigurationManager.AppSettings["SmtpServerHost"];                ////指定端口号                //smtpClient.Port = int.Parse(ConfigurationManager.AppSettings["SmtpServerPort"]);                ////超时时间                //smtpClient.Timeout = int.Parse(ConfigurationManager.AppSettings["Timeout"]);                ////附件地址                //filePath = ConfigurationManager.AppSettings["EmailFilePath"];                //string sendEmailAddress = ConfigurationManager.AppSettings["SendEmailAddress"];                //string sendEmailPassword = ConfigurationManager.AppSettings["SendEmailPassword"];                //string displayEmailName = ConfigurationManager.AppSettings["DisplayEmailName"];                smtpClient.Host = host;                //指定端口号                smtpClient.Port = int.Parse(port);                //超时时间                smtpClient.Timeout = int.Parse(timeout);                //附件地址                filePath = filepath;                //邮件对象                mailMessage = new MailMessage();                //创建服务器认证                string sendEmailAddress = user;                string sendEmailPassword = pwd;                string displayEmailName = title;                NetworkCredential networkCredential = new NetworkCredential(sendEmailAddress, displayEmailName);                //实例化发件人地址                mailAddressFrom = new System.Net.Mail.MailAddress(sendEmailAddress, sendEmailAddress);                //指定发件人信息  包括邮箱地址和邮箱密码                smtpClient.Credentials = new System.Net.NetworkCredential(mailAddressFrom.Address, sendEmailPassword);            }            catch (Exception ex)            {                throw ex;            }        }        /// <summary>        /// 发送邮件        /// </summary>        public void Send(string target, string title, string content)        {            try            {                if (mailMessage != null)                {                    mailMessage.To.Clear();                }                //string[] targetEmail = ConfigurationManager.AppSettings["TargetEmailAddress"].Split(',');                string[] targetEmail = target.Split(',');                if (targetEmail.Length > 0)                {                    foreach (var email in targetEmail)                    {                        mailMessage.To.Add(new MailAddress(email));                    }                    //发件人邮箱                    mailMessage.From = mailAddressFrom;                    //邮件主题                    mailMessage.Subject = title;                    mailMessage.SubjectEncoding = System.Text.Encoding.UTF8;                    //邮件正文                    mailMessage.Body = content;                    mailMessage.BodyEncoding = System.Text.Encoding.UTF8;                    //清空历史附件  以防附件重复发送                    mailMessage.Attachments.Clear();                    //添加附件                    mailMessage.Attachments.Add(new Attachment(filePath, MediaTypeNames.Application.Octet));                    //开始发送邮件                    smtpClient.Send(mailMessage);                }            }            catch (Exception ex)            {                throw ex;            }        }    }