Get an Alternative Body into a BinData

See more Email Object Examples

Demonstrates the Chilkat Email.GetAlternativeBodyBd method, which copies the contents of the Nth alternative body into a BinData object. The first alternative body is at index 0, and it should only be called when NumAlternatives is greater than 0. This example builds a message with plain-text and HTML alternatives and copies the first into a BinData.

Background: This is the binary counterpart to GetAlternativeBody (which returns text). Reading an alternative into a BinData preserves the exact bytes — important when a body part uses a binary or unusual transfer encoding, or when you intend to hash it or write it out verbatim rather than decode it to a string.

Chilkat Go Downloads

Download Chilkat for Go

    success := false

    //  Demonstrates the GetAlternativeBodyBd method, which copies the contents of the Nth
    //  alternative body into a BinData object.  The first alternative body is at index 0; call
    //  only when NumAlternatives is greater than 0.

    email := chilkat.NewEmail()
    email.SetSubject("GetAlternativeBodyBd example")

    email.SetTextBody("This is the plain-text alternative.","text/plain")
    email.AddHtmlAlternativeBody("<html><body>This is the HTML alternative.</body></html>")

    //  Copy the first alternative body (index 0) into a BinData object.
    bd := chilkat.NewBinData()

    success = email.GetAlternativeBodyBd(0,bd)
    if success == false {
        fmt.Println(email.LastErrorText())
        email.DisposeEmail()
        bd.DisposeBinData()
        return
    }

    fmt.Println("Alternative 0 size (bytes) = ", bd.NumBytes())

    email.DisposeEmail()
    bd.DisposeBinData()