PowerShell

Add a Related Item from a BinData Object

Demonstrates the Chilkat Email.AddRelatedBd method, which adds a related item (such as an inline image) using the contents of a BinData object, and returns the generated Content-ID. This example loads an image into a BinData, adds it, captures the Content-ID, and references it from the HTML body.

Background: This is the binary, Content-ID-based way to embed an inline resource — the right choice for images, whose bytes belong in a BinData rather than a string. Because Chilkat generates the Content-ID, the usual pattern is: add the item first, capture the returned ID, then build the matching <img src="cid:..."> reference from it (done here with a StringBuilder).

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

$success = $false

#  Demonstrates the AddRelatedBd method, which adds a related item (such as an inline image)
#  using the contents of a BinData object, and returns the generated Content-ID.

$email = New-Object Chilkat.Email
$email.Subject = "Related image from BinData"

#  Load the image data from a file into a BinData object.
$bdImage = New-Object Chilkat.BinData
$success = $bdImage.LoadFile("qa_data/images/logo.png")
if ($success -eq $false) {
    $($bdImage.LastErrorText)
    exit
}

#  Add the image as a related item; capture its generated Content-ID.
$cid = $email.AddRelatedBd("logo.png",$bdImage)
if ($email.LastMethodSuccess -eq $false) {
    $($email.LastErrorText)
    exit
}

#  Reference the related item in the HTML body by its Content-ID.
$sbHtml = New-Object Chilkat.StringBuilder
$sbHtml.Append("<html><body><img src=`"cid:PLACEHOLDER_CID`"/></body></html>")
$numReplaced = $sbHtml.Replace("PLACEHOLDER_CID",$cid)
$email.SetHtmlBody($sbHtml.GetAsString())

$("NumRelatedItems = " + $email.NumRelatedItems)

#  Note: The path "qa_data/images/logo.png" is a relative local filesystem path,
#  relative to the current working directory of the running application.