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

        // Set an adddional delay in seconds to wait for JavaScript or AJAX calls after page load completed
        // Set this property to 0 if you don't need to wait for such asynchcronous operations to finish
        htmlToPdfConverter.ConversionDelay = 2;

        Document pdfDocument = null;
        try
        {
            // Convert a HTML page to a PDF document object
            pdfDocument = htmlToPdfConverter.ConvertUrlToPdfDocumentObject(urlTextBox.Text);

            int goToPageNumber = int.Parse(pageNumberTextBox.Text);
            if (goToPageNumber > pdfDocument.Pages.Count)
            {
                return;
            }

            // Get destination PDF page
            PdfPage goToPage = pdfDocument.Pages[goToPageNumber - 1];

            // Get the destination point in PDF page
            float goToX = float.Parse(xLocationTextBox.Text);
            float goToY = float.Parse(yLocationTextBox.Text);

            PointF goToLocation = new PointF(goToX, goToY);

            // Get the destination view mode
            DestinationViewMode viewMode = SelectedViewMode();

            // Create the destination in PDF document
            ExplicitDestination goToDestination = new ExplicitDestination(goToPage, goToLocation, viewMode);

            // Set the zoom level when the destination is displayed
            if (viewMode == DestinationViewMode.XYZ)
                goToDestination.ZoomPercentage = int.Parse(zoomLevelTextBox.Text);

            // Set the document Go To open action
            pdfDocument.OpenAction.Action = new PdfActionGoTo(goToDestination);

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

            // Send the PDF as response to browser

            // Set response content type
            Response.AddHeader("Content-Type", "application/pdf");

            // Instruct the browser to open the PDF file as an attachment or inline
            Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Go_To_Page_Open_Action.pdf; size={0}", outPdfBuffer.Length.ToString()));

            // Write the PDF document buffer to HTTP response
            Response.BinaryWrite(outPdfBuffer);

            // End the HTTP response and stop the current page processing
            Response.End();
        }
        finally
        {
            // Close the PDF document
            if (pdfDocument != null)
                pdfDocument.Close();
        }
    }