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Set a MIME Body, Preserving Content Headers

Demonstrates the Chilkat Mime.SetBody method, which sets the current part's body while preserving the existing content headers (Content-Type, charset, Content-Transfer-Encoding). The only argument is the body text; it is a void method.

Background: Unlike the SetBodyFrom... methods, which set both the content and the headers that describe it, SetBody replaces only the body text and leaves the existing Content-Type and encoding in place. That is what you want when the media type is already correct and you simply need to swap in new content — updating a templated part, for instance — without re-declaring its type.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

#  Demonstrates the Mime.SetBody method, which sets the current part's body while preserving the
#  existing content headers (Content-Type, charset, Content-Transfer-Encoding).  The only argument
#  is the body text.  It is a void method.

$mime = New-Object Chilkat.Mime

#  Establish the content headers first.
$success = $mime.SetBodyFromPlainText("initial")
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

#  Replace just the body text, keeping the existing Content-Type and encoding.
$mime.SetBody("This is the replacement body text.")

$mimeText = $mime.GetMime()
if ($mime.LastMethodSuccess -eq $false) {
    $($mime.LastErrorText)
    exit
}

$($mimeText)