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Visual Basic 6.0

Check if a MIME Entity is Multipart

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Demonstrates the Chilkat Mime.IsMultipart method, which returns whether the Content-Type begins with multipart/. It takes no arguments.

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 first question when processing a message is usually whether it is a single part or a container of parts, because that decides whether you read the body directly or iterate children. IsMultipart answers it for any of the multipart subtypes at once; use the more specific predicates when the exact subtype matters.

Chilkat Visual Basic 6.0 Downloads

Visual Basic 6.0
Dim success As Long
success = 0

'  Demonstrates the Mime.IsMultipart method, which returns whether the Content-Type begins with multipart/.  It takes no arguments.

Dim mime As New ChilkatMime
success = mime.LoadMimeFile("qa_data/multipart_message.eml")
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

If (mime.IsMultipart()) Then
    Debug.Print "This is a multipart entity."
Else
    Debug.Print "This is not a multipart entity."
End If