PowerShell

Remove a Part from a Multipart MIME Entity

Demonstrates the Chilkat Mime.RemovePart method, which removes the direct child at a zero-based index. The only argument is the index; valid values are 0 through NumParts - 1. An out-of-range index returns false and changes nothing.

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: Removing a part is how you strip an attachment or drop an unwanted alternative when reprocessing a message. Because parts are addressed by position, be mindful that removing one shifts the indexes of those after it — when deleting several, iterate from the last index downward so earlier removals do not renumber the parts you still intend to remove.

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

$success = $false

$mime = New-Object Chilkat.Mime
$success = $mime.LoadMimeFile("qa_data/multipart_message.eml")
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

#  Remove the direct child part at a zero-based index.  Valid indexes are 0 through NumParts - 1.
#  Here the last part is removed.
$lastIndex = $mime.NumParts - 1
$success = $mime.RemovePart($lastIndex)
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

$("Parts remaining: " + $mime.NumParts)