public virtual void ManipulatePdf(String src, String dest)
{
//Initialize PDF document
PdfDocument pdfDoc = new PdfDocument(new PdfReader(src), new PdfWriter(dest));
//Add text annotation
PdfAnnotation ann = new PdfTextAnnotation(new Rectangle(400, 795, 0, 0))
.SetOpen(true)
.SetTitle(new PdfString("iText"))
.SetContents("Please, fill out the form.");
pdfDoc.GetFirstPage().AddAnnotation(ann);
PdfCanvas canvas = new PdfCanvas(pdfDoc.GetFirstPage());
canvas.BeginText().SetFontAndSize(PdfFontFactory.CreateFont(StandardFonts.HELVETICA), 12).MoveText(265, 597
).ShowText("I agree to the terms and conditions.").EndText();
//Add form field
PdfAcroForm form = PdfAcroForm.GetAcroForm(pdfDoc, true);
PdfButtonFormField checkField = PdfFormField.CreateCheckBox(pdfDoc, new Rectangle(245, 594, 15, 15), "agreement"
, "Off", PdfFormField.TYPE_CHECK);
checkField.SetRequired(true);
form.AddField(checkField);
//Update reset button
form.GetField("reset").SetAction(PdfAction.CreateResetForm(new String[] { "name", "language", "experience1"
, "experience2", "experience3", "shift", "info", "agreement" }, 0));
pdfDoc.Close();
}
