Controls - How to Transition/Show/Hide controls with a Sliding Effect

There's no built-in way to hide/show controls with a transition effect. The best workaround I suggest is to use a technique by Mr Dang. In this post, I highlight this technique and explain - what is an easing equation?

Gallery Control - How to Paginate Data

Here's the best sample app that shows how to page and add previous and next buttons to a gallery.