How do I add annotations to an existing PDF file?

EDN Admin · Jan 31, 2006

Hey howzit,
I have been searching the net for ways to adding annotations (sticky notes) to PDF files programmatically, I have found one library on sourceforge.net called ITextSharp, but it creates a new PDF file (see code below) and then allows one to add annotations, I want to add annotations to an existing PDF file that is already filled with data and text.
 
 
// step 1: creation of a document-object
iTextSharp.text.Document document = new iTextSharp.text.Document(iTextSharp.text.PageSize.A4, 50, 50, 50, 50);

// step 2:
// we create a writer that listens to the document
iTextSharp.text.pdf.PdfWriter writer = iTextSharp.text.pdf.PdfWriter.GetInstance(document, new FileStream("dout.pdf", FileMode.Create));

// step 3: we Open the document
document.Open();
// step 4: we Add some content

document.Add(new Annotation("annotation", "This annotation is placed on an position", 100f, 500f, 200f, 600f));


// step 5: we close the document
document.Close();
 

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How do I add annotations to an existing PDF file?

EDN Admin

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