How to print a Visual with pagination in WPF?

Question

I have a ScrollViewer and very "long" content in it. I wrote a class that inherits from DocumentPaginator, but I don't understand how do I create a "frame" for every part of this Visual? I mean, how do I "look" at the next page of the control? I tried this, but with no success:

    public override DocumentPage GetPage(int pageNumber)
    {
        double left = pageNumber * pageSize.Width;
        Point pt = new Point(left, 0);

        visual.RenderTransform = Transform.Identity;
        visual.RenderTransform = new TranslateTransform(-left, 0);

        visual.Measure(pageSize);
        visual.Arrange(new Rect(visual.DesiredSize));

        DocumentPage page = new DocumentPage(visual);
        return page;
    }

With this code I get first page as it should be, second page is exactly like first, and all the rest pages are blank.