private void convertToPdfButton_Click(object sender, EventArgs e) { // Create a HTML to PDF converter object with default settings HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter(); // Set license key received after purchase to use the converter in licensed mode // Leave it not set to use the converter in demo mode htmlToPdfConverter.LicenseKey = "fvDh8eDx4fHg4P/h8eLg/+Dj/+jo6Og="; Cursor = Cursors.WaitCursor; // Convert HTML to PDF using the settings above string outPdfFile = @"DemoAppFiles\Output\HTML_to_PDF\Button_JavaScript_Actions.pdf"; Document pdfDocument = null; try { string htmlWithButton = htmlStringTextBox.Text; string baseUrl = baseUrlTextBox.Text; // Convert a HTML string with a button to a PDF document object pdfDocument = htmlToPdfConverter.ConvertHtmlToPdfDocumentObject(htmlWithButton, baseUrl); // Get the button location in PDF HtmlElementMapping buttonMapping = htmlToPdfConverter.HtmlElementsMappingOptions.HtmlElementsMappingResult.GetElementByMappingId("javascript_button"); if (buttonMapping != null) { PdfPage buttonPdfPage = buttonMapping.PdfRectangles[0].PdfPage; RectangleF buttonRectangle = buttonMapping.PdfRectangles[0].Rectangle; // The font used for buttons text in PDF document PdfFont buttonTextFont = pdfDocument.AddFont(new Font("Times New Roman", 8, FontStyle.Regular, GraphicsUnit.Point)); // Create a PDF form button PdfFormButton pdfButton = pdfDocument.Form.AddButton(buttonPdfPage, buttonRectangle, "Execute Acrobat JavaScript", buttonTextFont); // Set JavaScript action to be executed when the button is clicked string javaScript = null; if (alertMessageRadioButton.Checked) { // JavaScript to display an alert mesage javaScript = String.Format("app.alert(\"{0}\")", alertMessageTextBox.Text); } else if (printDialogRadioButton.Checked) { // JavaScript to open the print dialog javaScript = "print()"; } else if (zoomLevelRadioButton.Checked) { // JavaScript to set an initial zoom level javaScript = String.Format("zoom={0}", int.Parse(zoomLevelTextBox.Text)); } // Set the JavaScript action pdfButton.Action = new PdfActionJavaScript(javaScript); } // Save the PDF document in a memory buffer byte[] outPdfBuffer = pdfDocument.Save(); // Write the memory buffer in a PDF file System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer); } catch (Exception ex) { // The HTML to PDF conversion failed MessageBox.Show(String.Format("HTML to PDF Error. {0}", ex.Message)); return; } finally { // Close the PDF document if (pdfDocument != null) pdfDocument.Close(); Cursor = Cursors.Arrow; } // Open the created PDF document in default PDF viewer try { System.Diagnostics.Process.Start(outPdfFile); } catch (Exception ex) { MessageBox.Show(String.Format("Cannot open created PDF file '{0}'. {1}", outPdfFile, ex.Message)); } }