I wanted to spin an icon to show progress to my user while some content was downloading. I'm using MVVM (aren't you) and made a satisfactory Storyboard to spin the icon. However, it took longer than expected to trigger that animation from my ViewModel's property.I used a combination of the GoToState action and the DataTrigger from the Microsoft.Expression.Intera... dll as described here.Then I had problems getting it to start until I found this approach that saved the day. The DataTrigger didn't ......