While working on my Windows 8 Store application, Picfinity I came across a need for a drop-down button(which I thought was the correct term for this). A similar control is there on the start screen of Windows 8 that gives us options on clicking the logged in user’s image to Change Account picture, Lock, Sign Out etc.
I wanted this same behaviour in my application, to provide similar options for the logged in user. The easiest way to achieve this is to use a Popup. The xaml snippet below shows how to get a similar look on your application