我有多部分/混合体的电子邮件，其中包含带有Html部分和相关图像部分的嵌套多部分/相关部分。有没有办法将这些电子邮件构建为System.Net.Mail的MailMessage实例？
这不是候补问题。
1.1.1与1.1.2有关。但它与1.2.2无关。 1.1.1和1.2.1是单独的html主体。
我在下面粘贴了一条示例消息。
Message-ID: <mhtml-11@dsv.su.se>
Date: Wed, 04 Apr 2000 04:18:00 +0200
From: MHTML <mhtml@dsv.su.se>
MIME-Version: 1.0
To: mhtml@dsv.su.se
Subject: Test message no. 11
Content-Type: multipart/mixed; boundary="==boundary-2"
--==boundary-2
Content-Type: multipart/related; boundary="==boundary-1"; type="text/html"
Content-Location: http://www.dsv.su.se/jpalme/mimetest/
Text displayed only to non-MIME-compliant mailers
--==boundary-1
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: 7bit
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD><TITLE>Test message no. 11 first part</TITLE>
</HEAD>
<BODY>
<H1>This is test message no. 11 first HTML part</H1>
<H2>Here comes the red test image:</H2>
<IMG SRC="http://www.dsv.su.se/jpalme/mimetest/red-test-image.gif"
BORDER=0 HEIGHT=32 WIDTH=117 ALT="red test image">
<P>This is the last line of this test message.
</BODY></HTML>
--==boundary-1
Content-Type: image/gif
Content-ID: <image1.mhtml-11@dsv.su.se>
Content-Location: http://www.dsv.su.se/jpalme/mimetest/red-test-image.gif
Content-Transfer-Encoding: base64
Content-Disposition: inline; filename="red-test-image.gif"
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--==boundary-1--
--==boundary-2
Content-Type: multipart/related; boundary="==boundary-1"; type="text/html"
Content-Location: http://www.dsv.su.se/jpalme/mimetest/
Text displayed only to non-MIME-compliant mailers
--==boundary-1
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: 7bit
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD><TITLE>Test message no. 11 second part</TITLE>
</HEAD>
<BODY>
<H1>This is test message no. 11 second HTML part</H1>
<H2>Here comes the yellow test image:</H2>
<IMG SRC="cid:image2.mhtml-11@dsv.su.se" BORDER=0 HEIGHT=32 WIDTH=152
ALT="yellow test image">
<P>This is the last line of this test message.
</BODY></HTML>
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Content-ID: <image2.mhtml-11@dsv.su.se>
Content-Transfer-Encoding: base64
Content-Disposition: inline; filename="yellow-test-image.gif"
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--==boundary-1--
--==boundary-2--
答案 0 :(得分：0)
您可以使用一些免费的库，查看MailMessagesExamples.zip： http://www.lumisoft.ee/lswww/download/downloads/Examples/
或谷歌其他一些图书馆。
Mime非常复杂，从字符串撰写有效的消息很难，内部有一些unicode字符。