PowerShell

Attach a File to a Multipart MIME Entity

Demonstrates the Chilkat Mime.AppendPartFromFile method, which reads a local file, creates an attachment part, and appends it. The only argument is the file path; the content headers are chosen from the filename extension.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the one-call way to add an attachment: Chilkat reads the file, infers its Content-Type from the extension, base64-encodes binary content, and appends it as a child part — typically inside a multipart/mixed. It is the building block behind adding attachments to an email, saving you from constructing the part and setting its headers by hand.

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

$success = $false

#  Demonstrates the Mime.AppendPartFromFile method, which reads a local file, creates an attachment
#  part, and appends it.  The only argument is the file path; the content headers are chosen from
#  the filename extension.

$mime = New-Object Chilkat.Mime
$success = $mime.NewMultipartMixed()
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

#  A message body part.
$bodyPart = New-Object Chilkat.Mime
$success = $bodyPart.SetBodyFromPlainText("Please see the attached files.")
if ($success -eq $false) {
    $($bodyPart.LastErrorText)
    exit
}

$success = $mime.AppendPart($bodyPart)
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

#  Attach files directly.
$success = $mime.AppendPartFromFile("qa_data/report.pdf")
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

$success = $mime.AppendPartFromFile("qa_data/photo.jpg")
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

$("Number of parts: " + $mime.NumParts)