Please, excuse me for the confusion. The sample mentioned is available only for UI for Windows Universal (Windows 8.1)
and is not available for UI for Universal Windows Platform. Currently, for UI for UWP we offer only the Sales dashboard demo. We are working on more extensive sample application demonstrating various controls setup. It is scheduled to be released with our next major release scheduled for the middle of May.
Nevertheless, you can download and use the Windows 8.1 sample as a reference.
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