Add an Attachment from a BinData Object

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Demonstrates the Chilkat Email.AddAttachmentBd method, which adds an attachment using the contents of a BinData object. The first argument is the attachment filename, the second is the BinData, and the third is the content type — if empty, it is inferred from the filename extension. This example loads a PDF into a BinData and attaches it.

Background: BinData is Chilkat's container for raw binary data. Attaching from a BinData is the right approach when the file's bytes are already in memory — generated on the fly, downloaded, or read from a database — rather than sitting on disk (which would use AddFileAttachment). Chilkat Base64-encodes the bytes into the message automatically.

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    success := false

    //  Demonstrates the AddAttachmentBd method, which adds an attachment using the contents of a
    //  BinData object.  The first argument is the attachment filename, the second is the BinData
    //  object, and the third is the content type (inferred from the filename extension if empty).

    email := chilkat.NewEmail()
    email.SetSubject("Attach from BinData")
    email.SetBody("Please see the attached file.")

    //  Load a file into a BinData object, then attach it.
    bd := chilkat.NewBinData()
    success = bd.LoadFile("qa_data/attachments/report.pdf")
    if success == false {
        fmt.Println(bd.LastErrorText())
        email.DisposeEmail()
        bd.DisposeBinData()
        return
    }

    success = email.AddAttachmentBd("report.pdf",bd,"application/pdf")
    if success == false {
        fmt.Println(email.LastErrorText())
        email.DisposeEmail()
        bd.DisposeBinData()
        return
    }

    fmt.Println("NumAttachments = ", email.NumAttachments())

    //  Note: The path "qa_data/attachments/report.pdf" is a relative local filesystem path,
    //  relative to the current working directory of the running application.

    email.DisposeEmail()
    bd.DisposeBinData()