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Get a Header Field of a Related Item

Demonstrates the Chilkat Email.GetRelatedHeader method, which returns the value of a named header field of a related item. The first argument is the zero-based related-item index and the second is the MIME header-field name. This example reads the Content-Type header of a related style sheet.

Background: Each related item is a MIME part with its own header block. Where GetRelatedAttr extracts a single named parameter from a header, GetRelatedHeader returns the entire value of a header field — for example the full Content-Type or Content-Location line — which is handy for inspecting exactly how an embedded resource is described.

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;  Demonstrates the GetRelatedHeader method, which returns the value of a header field (by
;  name) of a related item.  The first argument is the zero-based related-item index and the
;  second is the MIME header-field name.

$oEmail = ObjCreate("Chilkat.Email")
$oEmail.Subject = "GetRelatedHeader example"

;  Set an HTML body and add a related style sheet (index 0).
$oEmail.SetHtmlBody "<html><head><link rel=""stylesheet"" href=""styles.css""/></head><body>Styled.</body></html>"
$oEmail.AddRelatedString2 "styles.css","body { color: navy; }","utf-8"

;  Get the Content-Type header of the first related item (index 0).
Local $sCt = $oEmail.GetRelatedHeader(0,"Content-Type")
ConsoleWrite("Related item 0 Content-Type: " & $sCt & @CRLF)