(.NET Core C#) Parsing a Multipart/Digest Email

This example demonstrates how to parse a multipart/digest email. An email parsed by this sample could have a MIME structure as follows:

multipart/mixed
    text/plain
    text/plain
    multipart/digest
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
        message/rfc822
    text/plain

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// Note: This example requires Chilkat v9.5.0.66 or greater.

string emlPath = "qa_data/eml/multipart_digest.eml";

Chilkat.Email email = new Chilkat.Email();

// For this example, we'll load the email from a .eml.
// The email could alternatively be loaded as a result of downloading from an IMAP or POP3 server..

bool success = email.LoadEml(emlPath);
if (success != true) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

int numDigests = email.NumDigests;
Debug.WriteLine("num digests = " + Convert.ToString(numDigests));

int i = 0;
while (i < numDigests) {
    Chilkat.Email eDigest = email.GetDigest(i);
    Debug.WriteLine(Convert.ToString(i) + ":" + eDigest.FromAddress + ", " + eDigest.Subject);
    string m = eDigest.GetHeaderField("Message");
    if (eDigest.LastMethodSuccess == true) {
        Debug.WriteLine("    Message = " + m);
    }

    i = i + 1;
}