Add multiple Stamps (Watermarks) in PDF file using iTextSharp in ASP.Net

Hello,

I add a stamp to each page with this code. But I want to add more than one stamp to each page.

How can I do it, I couldn't set up the foreach loop

private void damga(string resimdosyası, string dosyayolu)
{
    byte[] bytes = File.ReadAllBytes(dosyayolu);
    var resim = iTextSharp.text.Image.GetInstance(resimdosyası);
    resim.SetAbsolutePosition(0, 100);
    PdfContentByte waterMark;

    using (MemoryStream stream = new MemoryStream())
    {
        PdfReader reader = new PdfReader(bytes);
        using (PdfStamper stamper = new PdfStamper(reader, stream))
        {
            int sayfa = reader.NumberOfPages;
            for (int i = 1; i <= sayfa; i++)
            {
                waterMark = stamper.GetUnderContent(i);
                waterMark.AddImage(resim);
            }
        }
        bytes = stream.ToArray();
    }
    File.WriteAllBytes(dosyayolu, bytes);
}