/// 
        /// 调用lumisoft发送邮件        /// 
        /// 发送者的邮件地址        /// 给谁发的邮件地址        /// 主题        /// 正文        /// 附件路径        /// 
     
      成功与否
             public bool SendMailByLumisoft(string fromEmailAddr, string toEmailAddr, string subjectText, string bodyText, string filePath)        {            Mime m = new Mime();            MimeEntity mainEntity = m.MainEntity;            // Force to create From: header field              mainEntity.From = new AddressList();            mainEntity.From.Add(new MailboxAddress(fromEmailAddr, fromEmailAddr));            // Force to create To: header field              mainEntity.To = new AddressList();            mainEntity.To.Add(new MailboxAddress(toEmailAddr, toEmailAddr));            mainEntity.Subject = subjectText;            //添加正文              mainEntity.ContentType = MediaType_enum.Multipart_mixed;            MimeEntity textEntity = mainEntity.ChildEntities.Add();            textEntity.ContentType = MediaType_enum.Text_html;            textEntity.ContentTransferEncoding = ContentTransferEncoding_enum.Base64;            textEntity.DataText = bodyText;            //发送附件              if (!string.IsNullOrEmpty(filePath))            {                MimeEntity attachmentEntity = new MimeEntity();                attachmentEntity.ContentType = MediaType_enum.Application_octet_stream;                attachmentEntity.ContentDisposition = ContentDisposition_enum.Attachment;                attachmentEntity.ContentTransferEncoding = ContentTransferEncoding_enum.Base64;                attachmentEntity.ContentDisposition_FileName = filePath;                attachmentEntity.DataFromFile(filePath);                mainEntity.ChildEntities.Add(attachmentEntity);            }            try            {                SMTP_Client.QuickSend(m);                return true;            }            catch (Exception e)            {                Console.Write(e.StackTrace);                return false;            }        }