Rotation Animation only using XAML

1. For animations to work properly, they have to run in a seperate Thread.

2. That is simply change Notification. Just implement INotifyPropertyChanged and fire the ChangeNotification as here:

http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged%28v=vs.95%29.aspx

Once you have implemented it, the binding engine will register an "PropertyChangeEventHandler". This old Interace (since .NET 2.0) is the easiest way to make your properties binding-capable.