Execute Acrobat JavaScript Code when a Button is Clicked

protected void convertToPdf()
{
    // Get the server IP and port
    String serverIP = textBoxServerIP.Text;
    uint serverPort = uint.Parse(textBoxServerPort.Text);

    // Create a PDF document
    Document pdfDocument = null;
    if (radioButtonUseTcpService.Checked)
        pdfDocument = new Document(serverIP, serverPort);
    else
        pdfDocument = new Document(true, textBoxWebServiceUrl.Text);

    // Set optional service password
    if (textBoxServicePassword.Text.Length > 0)
        pdfDocument.ServicePassword = textBoxServicePassword.Text;

    // 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 = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

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

    // The titles font used to mark various sections of the PDF document
    PdfFont titleFont = new PdfFont("Times New Roman", 8, true);

    TextElement titleTextElement = new TextElement(5, 5, "Execute an Acrobat JavaScript code when the button below is clicked. Using a JavaScript code you can open the print dialog, display an alert message or set the document zoom level in PDF viewer.", titleFont);
    pdfPage.AddElement(titleTextElement);

    PdfPage buttonPdfPage = pdfDocument.GetPage(0);
    RectangleFloat buttonRectangle = new RectangleFloat(5, 40, 100, 20);

    // The font used for buttons text in PDF document
    PdfFont buttonTextFont = new PdfFont("Times New Roman", 8, true);

    // Create a PDF form button
    PdfFormButton pdfButton = new PdfFormButton(buttonRectangle, "Execute Acrobat JavaScript", buttonTextFont);
    pdfButton.Style.BackColor = RgbColor.Beige;
    pdfDocument.Form.AddButton(buttonPdfPage, pdfButton);

    // 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();
}