Add a Related Item from BinData by Content-Location

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Demonstrates the Chilkat Email.AddRelatedBd2 method, which adds a related item using the binary data in a BinData object, addressed by Content-Location. The second argument specifies the filename, path, or URL used by the corresponding HTML reference. This example embeds an image referenced as logo.png.

Background: This is the binary counterpart of AddRelatedString2 and the Content-Location sibling of AddRelatedBd. Instead of a generated cid: reference, the HTML keeps an ordinary src="logo.png" and the related part is matched to it by name — convenient when turning an existing web page into an email so its original relative URLs keep working.

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bool success = false;

//  Demonstrates the AddRelatedBd2 method, which adds a related item using the binary data in
//  a BinData object, addressed by Content-Location.  The second argument specifies the filename/path/URL
//  used by the corresponding HTML reference.

Chilkat.Email email = new Chilkat.Email();
email.Subject = "Related image from BinData (Content-Location)";

//  The HTML references the image by the same name used as the Content-Location.
email.SetHtmlBody("<html><body><img src=\"logo.png\"/></body></html>");

//  Load the image data from a file into a BinData object.
Chilkat.BinData bdImage = new Chilkat.BinData();
success = bdImage.LoadFile("qa_data/images/logo.png");
if (success == false) {
    Debug.WriteLine(bdImage.LastErrorText);
    return;
}

//  Add the image as a related item addressed by Content-Location "logo.png".
success = email.AddRelatedBd2(bdImage,"logo.png");
if (success == false) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

Debug.WriteLine("NumRelatedItems = " + Convert.ToString(email.NumRelatedItems));

//  Note: The path "qa_data/images/logo.png" is a relative local filesystem path,
//  relative to the current working directory of the running application.