Set Metadata in iTextSharp

Question

I am developing an application and i use the iTextSharp library.

I am also reading the iText in action from Manning so i can get references.

In Chapter 12 it

Answer 1

 public void pdfproperties()
    {
        string inputFile = @"D:\1.pdf";
        string outputFile = @"D:\48.pdf";
        PdfReader reader = new PdfReader(inputFile);
        foreach (KeyValuePair KV in reader.Info)
        {
            reader.Info.Remove(KV.Key);
        }
        using (FileStream FS = new FileStream(outputFile, FileMode.Create, FileAccess.Write, FileShare.None))
        {
            using (Document Doc = new Document())
            {
                using (PdfCopy writer = new PdfCopy(Doc, FS))
                {
                    Doc.Open();
                    Doc.AddTitle("Add Title");
                    Doc.AddSubject("Add Subject");
                    Doc.AddKeywords("Add Keywords");
                    Doc.AddCreator("Application Creator");
                    Doc.AddAuthor("Add Author");
                    for (int i = 1; i <= reader.NumberOfPages; i++)
                    {
                        writer.AddPage(writer.GetImportedPage(reader, i));
                    }
                    writer.Info.Put(new PdfName("Producer"), new PdfString("Producer Name"));
                    Doc.Close();
                }
            }
        }
    }