Export in pdf e stream del testo

            StringBuilder sb = new StringBuilder();

            PdfReader reader = new PdfReader(File.ReadAllBytes("...file..."));
            for (int i = 1; i <= reader.NumberOfPages; i++)
            {
                byte[] bytes = reader.GetPageContent(i);
                bool inserire = false;

                foreach (byte item in bytes)
                {
                    char c = (char)item;

                    if (c == '(')
                    {
                        inserire = true;
                        continue;
                    }

                    if (c == ')')
                        inserire = false;
                    else
                        if(inserire)
                            sb.Append(c);
                }
            }