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I am new to this topic.

What i have done so far,

1) I have read existing pdf document

2) I have created copy of existing pdf using pdfStamper of iTextSharp

3) and create three layer on new pdf using iTextSharp.

Now i want to open this pdf in adobe reader and i want to add comments on these three layer separately as regular pdf commenting option.

But problem is, it is not saving on respective layer, it is saving on pdf.

On/Off action of pdf layer for comment is not working.

can you guide me how to proceed further.

Thank You all
Updated 6-Dec-17 7:33am

1 solution

string originalFile = "Original1.pdf";
string copyOfOriginal = "Re-copia.pdf";

byte[] bytes = Convert.FromBase64String(archivo);

System.IO.FileStream stream = new FileStream(originalFile, FileMode.CreateNew);
System.IO.BinaryWriter writer = new BinaryWriter(stream);
writer.Write(bytes, 0, bytes.Length);

PdfReader reader1 = new PdfReader(originalFile);
using (FileStream fs = new FileStream(copyOfOriginal, FileMode.Create, FileAccess.Write, FileShare.None))
// Creating iTextSharp.text.pdf.PdfStamper object to write
// Data from iTextSharp.text.pdf.PdfReader object to FileStream object
using (PdfStamper stamper = new PdfStamper(reader1, fs))

    int pageCount = reader1.NumberOfPages;

    // Create New Layer for Watermark
    PdfLayer layer = new PdfLayer("WatermarkLayer", stamper.Writer);
    // Loop through each Page
    for (int i = pageCount; i <= pageCount; i++)
        // Getting the Page Size
        Rectangle rect = reader1.GetPageSize(i);

        // Get the ContentByte object
        PdfContentByte cb = stamper.GetUnderContent(i);

        // Tell the cb that the next commands should be "bound" to this new layer
        cb.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 50);

        PdfGState gState = new PdfGState();

        string codbartest = codBarras;
        BarcodePDF417 bcpdf417 = new BarcodePDF417();
        //Asigna el código de barras en base64 a la propiedad text del objeto..
        bcpdf417.Text = ASCIIEncoding.ASCII.GetBytes(codbartest);
        Image imgpdf417 = bcpdf417.GetImage();
        imgpdf417.SetAbsolutePosition(50, 50);
        // Close the layer
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