将表单域从一个PDF复制到另一个PDF

PdfReader currentReader = new PdfReader( CURRENT_PDF_PATH ); // throws
PdfReader pdfFromWord = new PdfReader( TWEAKED_PDF_FROM_WORD_PATH ); // throws
PdfStamper stamper = new PdfStamper( currentReader , outputFile ); //throws
for( int i = 1; i <= tempalteReader.getNumberOfPages(); ++i) {
  stamper.replacePage( pdfFromWord, i, i );
}

stamper.close(); // throws 

iTextSharp

private void CopyFields(PdfStamper targetFile, PdfReader sourceFile){
{
  foreach (DictionaryEntry de in targetFile.AcroFields.Fields)
  {
    string fieldName = de.Key.ToString();
    target.AcroFields.SetField(fieldName, sourceFile.AcroFields.GetField(fieldName));
  }
}