Mimekit将rtf作为附件而不是正文添加 [英] Mimekit adds the rtf as an attachment and not the body

问题描述

使用以下代码，将winmail.dat文件的rtf正文作为附件添加到已保存的电子邮件中，而不是正文中:

Using the following code the rtf body of the winmail.dat file is added as an attachment to the saved email not the body:

using (Stream stream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.None))
{
    MimeKit.MimeMessage mimeMessage = MimeKit.MimeMessage.Load(stream);

    int i = 1;
    foreach (MimeKit.MimePart attachment in mimeMessage.Attachments)
    {
        if (attachment.GetType() == typeof(MimeKit.Tnef.TnefPart))
        {
            MimeKit.Tnef.TnefPart tnefPart = (MimeKit.Tnef.TnefPart)attachment;

            MimeKit.MimeMessage tnefMessage = tnefPart.ConvertToMessage();
            tnefMessage.WriteTo(path + $"_tnefPart{i++}.eml");
        }
    }
}

我该如何解决?

在Attachments中不存在该文件，但是在BodyParts中存在附件和body.rtf文件.所以我可以这样获得body.rtf文件:

Looking into the Attachments it is not present there but the attachments and the body.rtf file are present in the BodyParts. So I can get the body.rtf file like this:

int b = 1;
foreach (MimeKit.MimeEntity bodyPart in tnefMessage.BodyParts)
{
    if (!bodyPart.IsAttachment)
    {
        bodyPart.WriteTo(path + $"_bodyPart{b++}.{bodyPart.ContentType.MediaSubtype}");
    }
}

---

旁注:body.rtf文件不是真正的rtf，因为它以以下内容开头:

---

Side note: Is the body.rtf file isn't true rtf because it starts with the following:

Content-Type:文本/rtf；名称= body.rtf

Content-Type: text/rtf; name=body.rtf

(新行)

推荐答案

获得Content-Type标头的原因是因为您正在编写MIME信封以及内容.

The reason that you are getting the Content-Type header is because you are writing the MIME envelope as well as the content.

您需要做的是这样

int b = 1;
foreach (MimeKit.MimeEntity bodyPart in tnefMessage.BodyParts)
{
    if (!bodyPart.IsAttachment)
    {
        var mime = (MimeKit.MimePart) bodyPart;
        mime.ContentObject.DecodeTo(path + $"_bodyPart{b++}.{bodyPart.ContentType.MediaSubtype}");
    }
}

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