Wiring UI
RadPdfViewer provides commands and respective command descriptors that you can easily bind to when creating UI.
You can download a runnable project from our online SDK repository here, the example is listed as PdfViewer / FirstLook.
The project is wired to work with RadToolBar and RadContextMenu.
You can note how the DataContext of the toolbar is bound to the instance of RadPdfViewer on the same page.