Check if a MIME Part is Video

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Demonstrates the Chilkat Mime.IsVideo method, which returns whether the Content-Type begins with video/. It takes no arguments and applies to the current part.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: The video counterpart to the other media predicates, for identifying video attachments so they can be treated appropriately — extracted, transcoded, or size-checked. It matches any video/ subtype.

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bool success = false;

//  Demonstrates the Mime.IsVideo method, which returns whether the Content-Type begins with video/.  It takes no arguments and applies to the current
//  part.  This example iterates the parts of a multipart message and reports which ones match.

Chilkat.Mime mime = new Chilkat.Mime();
success = mime.LoadMimeFile("qa_data/multipart_message.eml");
if (success == false) {
    Debug.WriteLine(mime.LastErrorText);
    return;
}

int n = mime.NumParts;
Chilkat.Mime part = new Chilkat.Mime();
int i;
for (i = 0; i <= n - 1; i++) {
    success = mime.PartAt(i,part);
    if (success == false) {
        Debug.WriteLine(mime.LastErrorText);
        return;
    }

    if (part.IsVideo()) {
        Debug.WriteLine("Part " + Convert.ToString(i) + " (" + part.ContentType + ") is video.");
    }

}