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Basically if you have situation where you need to either show or hide a visual element, you need to know what State you are in. As you can’t attach 2 different Triggers (Behaviours) to the same element, & expect to activate/fire them in an alternating manner with the same action (i.e. a mouse click). Blend will only ever fire one & continue to fire the same one. (The closest in the Z order i presume…) And my first thought was, that i needed some code to determine what state I was in. But you don’t!

Storyboards are one of the primary ways you create animations in Silverlight, WPF, and Windows Phone using Expression Blend. Creating a storyboard is fairly easy, but actually using a storyboard such as having it play is not. To help with this, you have the ControlStoryboardAction.

Silverlight provides a flexible animation engine that can be used to transform and manipulate objects in a timeline. While you can do nearly anything you’d like to objects using Storyboards things get a little tricky when you want to synchronize storyboards with audio or video files. There are several different approaches that can be taken to keep things in sync.

Each element (circle) has it’s own storyboard that uses the projection properties to spin it around in a 360 degree fashion on it’s X axis. By increasing the centre point value of the Z axis we get a larger radius.

On top of that each element is offset by 30 degrees on it’s Y axis, this allows all the elements to form an imaginary sphere. I have also set the storyboard durations to different lengths to allow a chaotic feel to the animation.