PDF Open Action

private void buttonCreatePdf_Click(object sender, EventArgs e)
{
    // create a PDF document
    PdfDocument document = new PdfDocument();

    // create the true type fonts that can be used in document
    Font ttfFont = new Font("Times New Roman", 10, System.Drawing.GraphicsUnit.Point);
    PdfFont newTimesFont = document.CreateFont(ttfFont);
    PdfFont newTimesFontEmbed = document.CreateFont(ttfFont, true);

    // create page 1
    PdfPage page1 = document.AddPage();
    // create a text object to be laid out on this page
    PdfText text1 = new PdfText(10, 10, "This is the Page 1 of the document with Open action", newTimesFontEmbed);
    // layout the text
    page1.Layout(text1);

    // create page 2
    PdfPage page2 = document.AddPage();
    // create a text object to be laid out on this page
    PdfText text2 = new PdfText(10, 10, "This is the Page 2 of the document with Open action", newTimesFontEmbed);
    // layout the text
    page2.Layout(text2);

    // create page 1
    PdfPage page3 = document.AddPage();
    // create a text object to be laid out on this page
    PdfText text3 = new PdfText(10, 10, "This is the Page 3 of the document with Open action", newTimesFontEmbed);
    // layout the text
    page3.Layout(text3);

    if (radioButtonJavaScript.Checked)
    {
        // display an alert message when the document is opened

        string alertMessage = textBoxAlertMessage.Text;
        string javaScriptCode = "app.alert({cMsg: \"" + alertMessage + "\", cTitle: \"Open Document JavaScript Action\"});";

        // create the JavaScript action to display the alert
        PdfJavaScriptAction javaScriptAction = new PdfJavaScriptAction(javaScriptCode);

        // set the document JavaScript open action
        document.SetOpenAction(javaScriptAction);
    }
    else
    {
        // go to a given page in document and set the given zoom level when the document is opened

        int pageIndex = radioButtonPage1.Checked ? 0 : (radioButtonPage2.Checked ? 1 : 2);
        int zoomLevel = int.Parse(textBoxZoomLevel.Text);

        PdfDestination openDestination = new PdfDestination(document.Pages[pageIndex], new PointF(10, 10));
        openDestination.Zoom = zoomLevel;
        PdfGoToAction goToAction = new PdfGoToAction(openDestination);

        // set the document GoTo open action
        document.SetOpenAction(goToAction);
    }

    Cursor = Cursors.WaitCursor;
    string pdfFile = Application.StartupPath + @"\DemoOutput\OpenAction.pdf";
    try
    {
        document.WriteToFile(pdfFile);
    }
    catch (Exception ex)
    {
        MessageBox.Show(String.Format("Cannot create the PDF document. {0}", ex.Message));
        return;
    }
    finally
    {
        document.Close();
        Cursor = Cursors.Arrow;
    }

    // open the created PDF document
    try
    {
        System.Diagnostics.Process.Start(pdfFile);
    }
    catch (Exception ex)
    {
        MessageBox.Show(String.Format("The PDF document was created but cannot open '{0}'. {1}", pdfFile, ex.Message));
    }
}