/// <summary>
        /// 邮件信息
        /// </summary>
        /// <param name="_username">邮件主题</param>
        /// <param name="_subject">邮件内容</param>
        /// <param name="_body">收件人邮件地址</param>
    /// <param name="_url">邮件内容</param>
        /// <param name="_emailAddress">收件人邮件地址</param>
        /// <returns></returns>
public void SendMail(string _username, string _subject, string _body, string _url, string _emailAddress)
        {
            SmtpClient client = new SmtpClient();
            //从配置文件中读取126邮箱的用户名和密码
            client.Credentials = new System.Net.NetworkCredential(ConfigurationSettings.AppSettings["mailUser"], ConfigurationSettings.AppSettings["mailPwd"]);
            client.Port = Convert.ToInt32(ConfigurationSettings.AppSettings["Port"]);//126使用的端口
            client.Host = ConfigurationSettings.AppSettings["mailSmtpServer"];
            client.EnableSsl = true;//经过ssl加密

            try
            {
                client.Send(InitMail(_subject, _body, _emailAddress));
            }
            catch (System.Net.Mail.SmtpException ex)
            {
            }
        }
        /// <summary>
        /// 邮件信息
        /// </summary>
        /// <param name="Subject">邮件主题</param>
        /// <param name="Body">邮件内容</param>
        /// <param name="Address">收件人邮件地址</param>
        /// <returns></returns>
        public MailMessage InitMail(string Subject, string Body, string Address)
        {
            MailMessage mail = new MailMessage();
            //发件人
            mail.From = new MailAddress("XXXX@126.com");//发件人的邮箱
            //收件人
            mail.To.Add(new MailAddress(Address));
            //主题
            mail.Subject = Subject;
            //内容
            mail.Body = Body;
            //邮件主题和正文编码格式
            mail.SubjectEncoding = System.Text.Encoding.UTF8;
            mail.BodyEncoding = System.Text.Encoding.UTF8;
            //邮件正文是Html编码
            mail.IsBodyHtml = true;
            //优先级
            mail.Priority = MailPriority.High;
            //密件抄送收件人
            mail.Bcc.Add(Address);
            //抄送收件人
            mail.CC.Add(Address);
            //添加附件
            //mail.Attachments.Add(new Attachment("d:\\tes.txt"));
            return mail;
        }