Is it possible to modify PDF Form Field Names?

Question

Here\'s the situation. I have a PDF with automatically generated pdf form field names. The problem is that these names are not very user friendly. They look something like :

Answer 1

This worked for me using iText 7:

PdfReader reader = new PdfReader("Source.pdf");

using (FileStream fs = new FileStream("Dest.pdf", FileMode.Create))
{
    using (var pdfDoc = new PdfDocument(reader, new PdfWriter(fs)))
    {
        PdfAcroForm pdfForm = PdfAcroForm.GetAcroForm(pdfDoc, true);
        pdfDoc.GetWriter().SetCloseStream(true);
        
        var Fields = pdfForm.GetFormFields().Select(x => x.Key).ToArray();
        
        for (int i = 0; i < Fields.Length; i++)
        {
            pdfForm.RenameField(Fields[i], "new_" + Fields[i]);
        }                   
    }
}