C# 使用smtp发送邮件

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);            }        }