Sample Code C#
using System.Web.Mvc; namespace SelectPdf.Samples.Controllers { public class PdfFormFillingController : Controller { // GET: PdfFormFilling public ActionResult Index() { return View(); } [HttpPost] public ActionResult SubmitAction(FormCollection collection) { // the initial file string file = Server.MapPath("~/files/w-9.pdf"); // load the pdf form manager PdfFormManager form = new PdfFormManager(); form.Load(file); // fill some fields PdfFormFieldTextBox name = form.Fields["f1_1"] as PdfFormFieldTextBox; name.Text = "This is my name"; PdfFormFieldTextBox businessName = form.Fields["f1_2"] as PdfFormFieldTextBox; businessName.Text = "This is my business name"; PdfFormFieldCheckBox clasifIndividual = form.Fields["c1_1"] as PdfFormFieldCheckBox; clasifIndividual.Checked = true; PdfFormFieldTextBox address = form.Fields["f1_7"] as PdfFormFieldTextBox; address.Text = "This is my address"; PdfFormFieldTextBox city = form.Fields["f1_8"] as PdfFormFieldTextBox; city.Text = "This is my city"; PdfFormFieldTextBox employer1 = form.Fields["f1_14"] as PdfFormFieldTextBox; employer1.Text = "XX"; PdfFormFieldTextBox employer2 = form.Fields["f1_15"] as PdfFormFieldTextBox; employer2.Text = "1234567"; PdfFormFieldTextBox ssn1 = form.Fields["f1_11"] as PdfFormFieldTextBox; ssn1.Text = "123"; PdfFormFieldTextBox ssn2 = form.Fields["f1_12"] as PdfFormFieldTextBox; ssn2.Text = "45"; PdfFormFieldTextBox ssn3 = form.Fields["f1_13"] as PdfFormFieldTextBox; ssn3.Text = "6789"; // save pdf document byte[] pdf = form.Save(); // close pdf document form.Close(); // return resulted pdf document FileResult fileResult = new FileContentResult(pdf, "application/pdf"); fileResult.FileDownloadName = "Document.pdf"; return fileResult; } } }