At the moment, we don't plan to add a WPF RadUpload control in our suite. This is why the approach described at the CodeLibrary is still the only approach for taking advantage of the RadUpload
Also, as the WebBrowser
control is designed to display web pages, you should be able to display a page with the ASP.Net Upload control, but in case you encounter any issues with that, you can post them in the ASP.Net Upload control forums.
the Telerik team