// ===========================================================================
 public void Write(Stream stream)
 {
     ImageTypes it = new ImageTypes();
       using (ZipFile zip = new ZipFile()) {
     byte[] pdf = it.CreatePdf();
     zip.AddEntry(Utility.ResultFileName(it.ToString() + ".pdf"), pdf);
     PdfReader reader = new PdfReader(pdf);
     PdfReaderContentParser parser = new PdfReaderContentParser(reader);
     MyImageRenderListener listener = new MyImageRenderListener();
     for (int i = 1; i <= reader.NumberOfPages; i++) {
       parser.ProcessContent(i, listener);
     }
     for (int i = 0; i < listener.MyImages.Count; ++i) {
       zip.AddEntry(
     listener.ImageNames[i],
     listener.MyImages[i]
       );
     }
     zip.Save(stream);
       }
 }