EVO HTML to PDF Converter

Set Initial Zoom Level of the Generated PDF Document

EVO PDF Client for .NET Documentation

EVO HTML to PDF Converter can set the location in a PDF page where to go when the generated PDF is opened in a PDF viewer using a PdfActionGoTo object which can be assigned to DocumentOpenAction property. Additionally you can set the initial zoom level using the ExplicitDestinationZoomPercentage property of destination object used to construct the PdfActionGoTo object.

Code Sample - Set Initial Zoom Level of the Generated PDF Document

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

    // Create a HTML to PDF converter object
    HtmlToPdfConverter htmlToPdfConverter = null;
    if (radioButtonUseTcpService.Checked)
        htmlToPdfConverter = new HtmlToPdfConverter(serverIP, serverPort);
    else
        htmlToPdfConverter = new HtmlToPdfConverter(true, textBoxWebServiceUrl.Text);

    // Set optional service password
    if (textBoxServicePassword.Text.Length > 0)
        htmlToPdfConverter.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
    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;

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

    int goToPageNumber = int.Parse(pageNumberTextBox.Text);

    // Get destination PDF page
    PdfPage goToPage = pdfDocument.GetPage(goToPageNumber - 1);

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

    PointFloat goToLocation = new PointFloat(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 = new PdfActionGoTo(goToDestination);

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