repeat background image in pdfdocument using itextsharp

Question

i want to repeat backgroud image on my pdf document using itext sharp.

here my code to add image on document but i dont know how to repeat and set postion next to first image.

Document document = new Document(PageSize.A4, -240, 10, 10, 10);

PdfWriter writer = PdfWriter.GetInstance(document, new FileStream("test1.pdf", FileMode.Create));

document.Open();

iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(@"C:\Users\Archit\Downloads\icard2.jpg");

image.ScaleAbsolute(PageSize.A4.Rotate());

image.SetAbsolutePosition(0, 0);

document.Add(image);