I have searched the web but it looks like that it is not that easy, how can i rotate my text?
Document doc = new Document(new iTextSharp.text.Rectangle(600, 800), 0, 0, 0, 0);
PdfWriter.GetInstance(doc, new FileStream(Directory.GetCurrentDirectory() + "/genpdf.pdf", FileMode.Create));
doc.Open();
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(file);
Chunk c1 = new Chunk("~Comment~"); //rotate 270°
doc.Add(image);
doc.Add(text);
doc.Close();
The answer is in Rotate text answer
The writer is a PdfWriter type, you can get it like: