iTextSharp.text.pdf.PdfStamper.PartialFormFlattening C# (CSharp) Метод

        public bool PartialFormFlattening(String name)
        {
            return stamper.PartialFormFlattening(name);
        }

        /// <summary>
        /// Combines all the students into a single PDF with each page a seperate report.
        /// </summary>\
        void ExportToSinglePDF()
        {
            string savePath = System.IO.Path.Combine(System.IO.Path.GetFullPath(textSavePath.Text), string.Format("{0}.pdf", textFileName.Text));
            string templatePath = System.IO.Path.GetFullPath(textTempLocation.Text);

            int finishedReports = 0;

            using (Document doc = new Document())
            {
                using (PdfSmartCopy copy = new PdfSmartCopy(doc, new FileStream(savePath, FileMode.Create)))
                {
                    doc.Open();

                    foreach (var student in StudentList)
                    {
                        PdfReader reader = new PdfReader(templatePath);

                        using (MemoryStream ms = new MemoryStream())
                        {
                            using (PdfStamper stamper = new PdfStamper(reader, ms))
                            {
                                var form = stamper.AcroFields;

                                //Setting the text of the template to the stored info
                                form.SetField("Street", student.Address);
                                form.SetField("CityZipState", student.CityZipState);
                                form.SetField("ClassName", student.ClassName);
                                form.SetField("Comments", student.Comments);
                                form.SetField("Grade", student.Grade.ToString());
                                form.SetField("Critique", student.Critique);
                                form.SetField("HighSchool", student.HighSchool);
                                form.SetField("Session", student.Session);
                                form.SetField("Absences", student.SemesterTotalAbs.ToString());
                                form.SetField("Tardies", student.SemesterTotalTdy.ToString());
                                form.SetField("NetAbsences", student.SemesterNetAbs.ToString());
                                form.SetField("StuNameReversed", student.NameReversed);

                                form.SetField("Date", DateTime.Now.ToShortDateString());

                                form.RenameField("Comments", string.Format("Comments{0}", finishedReports));
                                form.RenameField("Date", string.Format("Date{0}", finishedReports));

                                //Flatten the fields that we do not want editable

                                stamper.FormFlattening = true;

                                stamper.PartialFormFlattening("StuNameReversed");
                                stamper.PartialFormFlattening("Street");
                                stamper.PartialFormFlattening("CityZipState");
                                stamper.PartialFormFlattening("HighSchool");
                                stamper.PartialFormFlattening("ClassName");
                                stamper.PartialFormFlattening("Session");
                                stamper.PartialFormFlattening("Absences");
                                stamper.PartialFormFlattening("Tardies");
                                stamper.PartialFormFlattening("NetAbsences");
                                stamper.PartialFormFlattening("Grade");
                                stamper.PartialFormFlattening("Critique");
                                stamper.PartialFormFlattening("Date");
                            }

                            reader = new PdfReader(ms.ToArray());
                            //Adds page to the output pdf
                            copy.AddPage(copy.GetImportedPage(reader, 1));

                            //Report progress to update status text
                            bgProgressThread.ReportProgress(++finishedReports);
                        }
                    }// Student Foreach end
                }
            }
        }