关于Lumisoft.Net.dll发邮件的方法

一：发邮件

1.　　 //首先创建一个邮件对象

　　　 Mail_Message m = Creat_PlainText_Html_Attachment_Image(addInfos, from_email, from_name, vTopic, vContent, vContent, attchInfos, true,dt);
            MemoryStream ms = new MemoryStream();
            MIME_Encoding_EncodedWord mee = new MIME_Encoding_EncodedWord(MIME_EncodedWordEncoding.Q, Encoding.UTF8);
            m.ToStream(ms, mee, Encoding.UTF8);
            ms.Position = 0;

            //smtp连接
            SMTP_Client smtp = new SMTP_Client();
            smtp.Connect(smtpServer, smtpPort, smtpUseSsl);
            smtp.EhloHelo(smtpServer);
            var auth = new AUTH_SASL_Client_Plain(from_email, password);
            smtp.Auth(auth);
            smtp.MailFrom(from_email, -1);
            foreach (MailaddsInfo ma in addInfos)
            {//多个收件人时循环，单个收件人可省略循环步骤
                smtp.RcptTo(ma.MailAdd);
            }
            //发送邮件
             smtp.SendMessage(ms);

    2.创建邮件实体类的方法

private static Mail_Message Creat_PlainText_Html_Attachment_Image(List<MailaddsInfo> addInfos, string sendAdd, string sendName, string subject, string body, string txtBody, List<MailattachmentInfos> attachInfos, bool notify,DateTime dt)
        {
            Mail_Message m = new Mail_Message();
            m.MimeVersion = "1.0";
            m.MessageID = MIME_Utils.CreateMessageID();//id
            m.Date = dt;//时间
            m.Subject = subject;//主题
            m.From = new Mail_t_MailboxList();
            //sendName:diaplayName,sendAdd:address
            m.From.Add(new Mail_t_Mailbox(sendName, sendAdd));//发件人
            m.To = new Mail_t_AddressList();//收件人
            m.Cc = new Mail_t_AddressList();
            m.Bcc = new Mail_t_AddressList();
            foreach (MailaddsInfo addinfo in addInfos)
            {
                switch (addinfo.addType)
                {
                    case "1":
                        m.To.Add(new Mail_t_Mailbox(addinfo.MailName, addinfo.MailAdd));
                        break;
                    case "2":
                        m.Cc.Add(new Mail_t_Mailbox(addinfo.MailName, addinfo.MailAdd));
                        break;
                    case "3":
                        m.Bcc.Add(new Mail_t_Mailbox(addinfo.MailName, addinfo.MailAdd));
                        break;
                    default:
                        break;
                }
            }
            //--- multipart/mixed -----------------------------------
            MIME_h_ContentType contentType_multipartMixed = new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed);
            contentType_multipartMixed.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartMixed multipartMixed = new MIME_b_MultipartMixed(contentType_multipartMixed);
            m.Body = multipartMixed;
            //--- multipart/alternative -----------------------------
            MIME_Entity entity_multipartAlternative = new MIME_Entity();
            MIME_h_ContentType contentType_multipartAlternative = new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative);
            contentType_multipartAlternative.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartAlternative multipartAlternative = new MIME_b_MultipartAlternative(contentType_multipartAlternative);
            entity_multipartAlternative.Body = multipartAlternative;
            multipartMixed.BodyParts.Add(entity_multipartAlternative);
            //--- text/plain ----------------------------------------
            MIME_Entity entity_text_plain = new MIME_Entity();
            MIME_b_Text text_plain = new MIME_b_Text(MIME_MediaTypes.Text.plain);
            entity_text_plain.Body = text_plain;
            //普通文本邮件内容，如果对方的收件客户端不支持HTML，这是必需的
            string plainTextBody = txtBody;
            text_plain.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, plainTextBody);
            multipartAlternative.BodyParts.Add(entity_text_plain);
            //--- text/html -----------------------------------------
            //内容
            string htmlText = body;//"<html>这是一份测试邮件，<img src=\"cid:test.jpg\">来自<font color=red><b>LumiSoft.Net</b></font></html>";
            MIME_Entity entity_text_html = new MIME_Entity();
            MIME_b_Text text_html = new MIME_b_Text(MIME_MediaTypes.Text.html);
            entity_text_html.Body = text_html;
            text_html.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, htmlText);
            multipartAlternative.BodyParts.Add(entity_text_html);
            //附件
            //--- application/octet-stream -------------------------
            if (attachInfos.Count > 0) {
                WebClient client = new WebClient();
                foreach (MailattachmentInfos attachInfo in attachInfos)
                {
                    byte[] bytes = client.DownloadData(attachInfo.FilePath);
                    MemoryStream stream = new MemoryStream(bytes);
                    string fileName = attachInfo.FileName;
                    MIME_Entity entity_attach = new MIME_Entity();
                    entity_attach = Mail_Message.CreateAttachment(stream, fileName);
                    entity_attach.ContentDisposition = new MIME_h_ContentDisposition(MIME_DispositionTypes.Attachment);
                    entity_attach.ContentDisposition.Param_FileName = fileName;
                    entity_attach.ContentType.Param_Name = fileName;
                    entity_attach.ContentDisposition.Parameters.EncodeRfc2047 = true;
                    entity_attach.ContentType.Parameters.EncodeRfc2047 = true;
                     multipartMixed.BodyParts.Add(entity_attach);
                  
                }
            }
            //设置回执通知
            if (notify)
            {
                m.DispositionNotificationTo = new Mail_t_MailboxList();
                m.DispositionNotificationTo.Add(new Mail_t_Mailbox(sendName, sendAdd));
            }
            return m;
        }