How to add Sticky Notes, Insert Text at cursor, .. Annotations in existing PDF file using iTextSharp with C#?

Question

I want to add Annotations comment in existing PDF file using iTextSharp with C#.

Please give sample code to add Annotations in existing PDF file.

Here PS Script

Answer 1

The iText(Sharp) example TimetableAnnotations1.java / TimetableAnnotations1.cs from chapter 7 of iText in Action — 2nd Edition shows how to add annotations to existing PDFs in general.

The central code is (in the C# example):

rect = GetPosition(screening);
annotation = PdfAnnotation.CreateText(
    stamper.Writer, rect, movie.MovieTitle,
    string.Format(INFO, movie.Year, movie.Duration),
    false, "Help"
);
annotation.Color = WebColors.GetRGBColor(
    "#" + movie.entry.category.color
);
stamper.AddAnnotation(annotation, page);

where stamper is a PdfStamper working on your PDF file; movie is a data structure the example retrieves title, text and color of the annotation from.

PdfAnnotation offers multiple other Create... methods to create other types of annotations.