ImageGear Printing API classes only work with ImageGear documents. In order to print a separate page, create a temporary ImGearDocument object for this page and use it with PrintJob, PrintPreview, or PrintPreviewWindow.

Note that ImGearDocument and its pages keep references to each other. If a page already references a document, it cannot be added to another document. When you are done using the temporary document, make sure to detach the page from the document, using ImGearDocument.Pages.Remove or ImGearDocument.Pages.RemoveAt methods.