.net中 发送邮件内容嵌入图片的具体实例

例程一

邮件内容调用图片格式为：<img src=\"cid:email001\">

发送邮件的服务端代码为：

smtpclient 发送邮件的对象 //代码省略

system.net.mail.mailmessage mailmessage = new system.net.mail.mailmessage();
mailmessage.from="发送者邮箱";
mailmessage.to.add("收件人邮件列表");
mailmessage.cc.add("抄送人邮件列表");
mailmessage.subject = subject;
alternateview htmlbody = alternateview.createalternateviewfromstring(content,null,"text/html");
linkedresource lrimage = new linkedresource("a.jpg","image/gif");
lrimage.contentid = "email001";
htmlbody.linkedresources.add(lrimage);
mailmessage.alternateviews.add(htmlbody);
smtpclient.send(mailmessage);

例程二

smtpclient smtp = new smtpclient();
smtp.deliverymethod = smtpdeliverymethod.network;
smtp.host = "smtp.163.com";
smtp.credentials = new networkcredential("renzhijie1111", "**");

mailmessage mm = new mailmessage();
mm.from = new mailaddress("[e-mail]", "无敌任志杰测试");
mm.to.add("[e-mail]");

mm.subject = "发送带图片邮件";

string plaintextbody = "如果你邮件客户端不支持html格式，或者你切换到“普通文本”视图，将看到此内容";
mm.alternateviews.add(alternateview.createalternateviewfromstring(plaintextbody, null, "text/plain"));

////html格式邮件的内容
string htmlbodycontent = "如果你的看到<b>这个</b>， 说明你是在以 <span style=\"color:red\">html</span> 格式查看邮件<br><br>";
htmlbodycontent += "<a href=\"//www.jb51.net//%22%3eva娱乐网</a> <img src=\"cid:weblogo\">";   //注意此处嵌入的图片资源
alternateview htmlbody = alternateview.createalternateviewfromstring(htmlbodycontent, null, "text/html");

linkedresource lrimage = new linkedresource(@"d:\1.jpg", "image/gif");
lrimage.contentid = "weblogo"; //此处的contentid 对应 htmlbodycontent 内容中的 cid: ，如果设置不正确，请不会显示图片
htmlbody.linkedresources.add(lrimage);

mm.alternateviews.add(htmlbody);

////要求回执的标志
mm.headers.add("disposition-notification-to", "[e-mail]");

////自定义邮件头
mm.headers.add("x-website", "//www.jb51.net/");

////针对 lotus domino server，插入回执头
mm.headers.add("returnreceipt", "1");

mm.priority = mailpriority.normal; //优先级
mm.replyto = new mailaddress("[e-mail]", "我自己");

////如果发送失败，smtp 服务器将发送 失败邮件告诉我
mm.deliverynotificationoptions = deliverynotificationoptions.onfailure;

////异步发送完成时的处理事件
smtp.sendcompleted += new sendcompletedeventhandler(smtp_sendcompleted);

////开始异步发送

smtp.sendasync(mm, null);