How to add footer on all page except last page using itextsharp

public override void OnEndPage(iTextSharp.text.pdf.PdfWriter writer, iTextSharp.text.Document document)
   {
       base.OnEndPage(writer, document);

PdfPTable tabFot = new PdfPTable(new float[] { 1F });
               PdfPCell cell;
               tabFot.TotalWidth = 250F;

               var FontColour = new BaseColor(68, 68, 132);
               var Calibri8 = FontFactory.GetFont("Calibri", 12, FontColour);

               cell = new PdfPCell(new Paragraph("Sign Here____________________", Calibri8));
               //cell = new PdfPCell(new Phrase("Sign Here____________________"));
               cell.Border = 0;

               tabFot.AddCell(cell);
               tabFot.WriteSelectedRows(0, -1, 40, 30, writer.DirectContent);