private MailMessage mailMessage;
        private SmtpClient smtpClient;
        private string password;//发件人密码[mi ma]  
        /**/
        /// <summary>  
        /// 处审核后类的实例  
        /// </summary>  
        /// <param name="To">收件人地址[di zhi]</param>  
        /// <param name="From">发件人地址[di zhi]</param>  
        /// <param name="Body">邮件[you jian]正文[zheng wen]</param>  
        /// <param name="Title">邮件[you jian]的主题</param>  
        /// <param name="Password">发件人密码[mi ma]</param>  
        public SendMail(string To, string From, string Body, string Title, string Password)
        {
            mailMessage = new MailMessage();
            mailMessage.To.Add(To);            
            mailMessage.From = new System.Net.Mail.MailAddress(From);
            mailMessage.Subject = Title;
            mailMessage.Body = Body;
            mailMessage.IsBodyHtml = true;
            mailMessage.BodyEncoding = System.Text.Encoding.UTF8;
            mailMessage.Priority = System.Net.Mail.MailPriority.Normal;
            this.password = Password;
            Console.WriteLine("send mail sucssesful");
        }

 /**/
        /// <summary>  
        /// 发送邮件[you jian]  
        /// </summary>  
        public void Send()
        {
            if (mailMessage != null)
            {
                smtpClient = new SmtpClient();
                smtpClient.Credentials = new System.Net.NetworkCredential(mailMessage.From.Address, password);//设置[she zhi]发件人身份[shen fen]的票据  
                smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
                smtpClient.Host = "mail." + mailMessage.From.Host;
                smtpClient.Send(mailMessage);
            }
        }