Execute Acrobat JavaScript Code when Document is Opened

Winnovative HTML to PDF Converter allows you to add an Acrobat JavaScript code in generated PDF to be executed when the PDF document is opened in a PDF viewer. You can set open actions in the generated PDF document to display an alert message, automatically open the print dialog or set the zoom level of the generated PDF document.

An Acrobat JavaScript action is represented by a PdfActionJavaScript object which can be assigned to DocumentOpenActionAction property. An object of DocumentOpenAction type is exposed by the DocumentOpenAction property.

Code Sample - Execute Acrobat JavaScript Code when Document is Opened

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;

// Use Winnovative Namespace
using Winnovative;

namespace WnvHtmlToPdfDemo.Controllers.PDF_Creator.PDF_Actions
{
    public class PDF_Creator_Execute_JavaScript_Open_ActionController : Controller
    {
        [HttpPost]
        public ActionResult CreatePdf(IFormCollection collection)
        {
            // Create a PDF document
            Document pdfDocument = new Document();

            // Set license key received after purchase to use the converter in licensed mode
            // Leave it not set to use the converter in demo mode
            pdfDocument.LicenseKey = "fvDh8eDx4fHg4P/h8eLg/+Dj/+jo6Og=";

            // Add a page to PDF document
            PdfPage pdfPage = pdfDocument.AddPage();

            try
            {
                // Create a HTML to PDF element to add to document
                HtmlToPdfElement htmlToPdfElement = new HtmlToPdfElement(collection["urlTextBox"]);

                // Optionally set a delay before conversion to allow asynchonous scripts to finish
                htmlToPdfElement.ConversionDelay = 2;

                // Add the HTML to PDF element to document
                pdfPage.AddElement(htmlToPdfElement);

                string javaScript = null;
                if (collection["JavaScriptAction"] == "alertMessageRadioButton")
                {
                    // JavaScript to display an alert mesage 
                    javaScript = String.Format("app.alert(\"{0}\")", collection["alertMessageTextBox"]);
                }
                else if (collection["JavaScriptAction"] == "printDialogRadioButton")
                {
                    // JavaScript to open the print dialog
                    javaScript = "print()";
                }
                else if (collection["JavaScriptAction"] == "zoomLevelRadioButton")
                {
                    // JavaScript to set an initial zoom level 
                    javaScript = String.Format("zoom={0}", int.Parse(collection["zoomLevelTextBox"]));
                }

                // Set the JavaScript action
                pdfDocument.OpenAction.Action = new PdfActionJavaScript(javaScript);

                // Save the PDF document in a memory buffer
                byte[] outPdfBuffer = pdfDocument.Save();

                // Send the PDF file to browser
                FileResult fileResult = new FileContentResult(outPdfBuffer, "application/pdf");
                fileResult.FileDownloadName = "Execute_Acrobat_JavaScript.pdf";

                return fileResult;
            }
            finally
            {
                // Close the PDF document
                pdfDocument.Close();
            }
        }
    }
}