I'm trying to change the text in some PDF annotations using iTextSharp. Here is my code:
void changeAnnotations(string inputPath, string outputPath)
{
PdfReader pdfReader = new PdfReader(inputPath);
PdfStamper pdfStamper = new PdfStamper(pdfReader, new FileStream(outputPath, FileMode.Create));
//get the PdfDictionary of the 1st page
PdfDictionary pageDict = pdfReader.GetPageN(1);
//get annotation array
PdfArray annotArray = pageDict.GetAsArray(PdfName.ANNOTS);
//iterate through annotation array
int size = annotArray.Size;
for (int i = 0; i < size; i++)
{
//get value of /Contents
PdfDictionary dict = annotArray.GetAsDict(i);
PdfString contents = dict.GetAsString(PdfName.CONTENTS);
//check if /Contents key exists
if (contents != null)
{
//set new value
dict.Put(PdfName.CONTENTS, new PdfString("value has been changed"));
}
}
pdfStamper.Close();
}
When I open the output file in Adobe Reader, none of the text has changed in any of the annotations. How should I be setting the new value in an annotation?
UPDATE: I've found that the value is being changed in the popup box that appears when I click on the annotation. And in some cases, when I modify this value in the popup box, the change is then applied to the annotation.
