Hi,
PdfReader myReader = new PdfReader(@"c:\test.pdf");
AcroFields myFields = myReader.AcroFields;
foreach(KeyValuePair<string,iTextSharp.text.pdf.AcroFields.Item> pair in myFields.Fields)
{
MessageBox.Show(pair.Value + " " + pair.Key);
}
Hope it works for you.
Regards