Mimekit adds the rtf as an attachment and not the body

问题

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");
        }
    }
}

How can I fix this?

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}");
    }
}

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

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

(new line)

回答1:

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

What you need to do is this:

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}");
    }
}

来源：https://stackoverflow.com/questions/42139666/mimekit-adds-the-rtf-as-an-attachment-and-not-the-body

标签

mailkit

mimekit