How to Count the total number of pages in PDF attachment ?

Hi,

you have to open each attachment to determine its page count.

Here's a script you can use in a button event.

var that = event.target,
  pageCount = 0,
    isPDF = 0,
    attmt = that.dataObjects,
    attmtPath = "",
    attmtDoc;
if (attmt !== null) {
  for (var i = 0, j = attmt.length; i < j; i += 1) {
    if (attmt[i].MIMEType === "application/pdf") {
        isPDF += 1;
        attmtDoc = that.openDataObject(attmt[i].name);
        pageCount += attmtDoc.numPages;
        attmtDoc.closeDoc();
    }   
  }
  if (isPDF === 0) {
    xfa.host.messageBox("There are file attached to this file, but none is a PDF.", "No PDF found", 0, 0);
  } else {
      xfa.host.messageBox("There " + (isPDF === 1 ? "is ":"are ") + isPDF.toString() + (isPDF === 1 ? " PDF file ":" PDF files ") + "attached to this file.\nThe total page count is: " + pageCount + " pages.", "Page Count of attached PDFs", 0, 0);
  }
} else {
  xfa.host.messageBox("No files attached to this file.", "No attachments found", 0, 0);
}