Add signature image on PDF without digitally signing it using iTextSharp

Question

I am using iTextSharp to work with PDFs. I want to add signature image to Signature field without digitally signing the document (without any involvement of certificate).

Answer 1

This is how I add a unsigned signature field

     public void buildPDFMemoSignature()
     {   
        using (var ms = new MemoryStream())
        {
        var doc = new Document(PageSize.A4, 20f, 10f, 30f, 0f);
        {
            PdfWriter writer = PdfWriter.GetInstance(doc, ms);
            doc.Open();
            try
            {
              // add stuff to your PDF

             // Signature is added here ***************

             PdfFormField field = PdfFormField.CreateSignature(writer);
  field.SetWidget(new iTextSharp.text.Rectangle(190, 730, 440, 650), PdfAnnotation.HIGHLIGHT_NONE);
                    //Rectangle(float llx, float lly, float urx, float ury) 
                    field.FieldName = "mySig";
                    field.Flags = PdfAnnotation.FLAGS_PRINT;
                    field.SetPage();
                    field.MKBorderColor = BaseColor.BLACK;
                    field.MKBackgroundColor = BaseColor.WHITE;
                    PdfAppearance tp = PdfAppearance.CreateAppearance(writer, 72, 48);
                    tp.Rectangle(0.5f, 0.5f, 71.5f, 47.5f);
                    tp.Stroke();
                    field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
                    writer.AddAnnotation(field); 
                    }
                    catch (Exception ex)
                    {  
                      //exceptions                   
                    }
                    finally
                    {
                        doc.Close();
                    }  
 }