افزودن پاورقی به PDF از طریق C#

var inputFile = Path.Combine(dataDir, "ImageInFooter.pdf");
var outputFile = Path.Combine(dataDir, "ImageInFooter_out.pdf");
var imagePath = Path.Combine(dataDir, "aspose-logo.jpg");
var pdfDocument = new Aspose.Pdf.Document(inputFile);
var imageStamp = new Aspose.Pdf.ImageStamp(imagePath);
imageStamp.BottomMargin = 10;
imageStamp.HorizontalAlignment = Aspose.Pdf.HorizontalAlignment.Center;
imageStamp.VerticalAlignment = Aspose.Pdf.VerticalAlignment.Bottom;
foreach (var page in pdfDocument.Pages)
{
    page.AddStamp(imageStamp);
}
pdfDocument.Save(outputFile);