Get Viewer Preference of PDF File

Get Viewer Preference of an existing PDF File

ViewerPreference class represents display modes of PDF files; for example, positioning the document window in the center of the screen, hiding viewer application’s menu bar etc.

In order to read the settings we use GetViewerPreference class. This method returns a variable where all settings are saved.

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetViewerPreference()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "SetViewerPreference.pdf"))
    {
        // Instantiate PdfContentEditor object
        var editor = new Aspose.Pdf.Facades.PdfContentEditor(document);

        // Get Viewer Preferences
        var preferences = editor.GetViewerPreference();

        if ((preferences & Aspose.Pdf.Facades.ViewerPreference.CenterWindow) != 0)
        {
            Console.WriteLine("CenterWindow");
        }

        if ((preferences & Aspose.Pdf.Facades.ViewerPreference.HideMenubar) != 0)
        {
            Console.WriteLine("Menu bar hided");
        }

        if ((preferences & Aspose.Pdf.Facades.ViewerPreference.PageModeFullScreen) != 0)
        {
            Console.WriteLine("Page Mode Full Screen");
        }
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetViewerPreference()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();

    // Open PDF document
    using var document = new Aspose.Pdf.Document(dataDir + "SetViewerPreference.pdf");

    // Instantiate PdfContentEditor object
    var editor = new Aspose.Pdf.Facades.PdfContentEditor(document);

    // Get Viewer Preferences
    var preferences = editor.GetViewerPreference();

    if ((preferences & Aspose.Pdf.Facades.ViewerPreference.CenterWindow) != 0)
    {
        Console.WriteLine("CenterWindow");
    }

    if ((preferences & Aspose.Pdf.Facades.ViewerPreference.HideMenubar) != 0)
    {
        Console.WriteLine("Menu bar hided");
    }

    if ((preferences & Aspose.Pdf.Facades.ViewerPreference.PageModeFullScreen) != 0)
    {
        Console.WriteLine("Page Mode Full Screen");
    }
}