title: Silverlight 4: How to trigger an Animation when TextBlock’s Text is changed during a DataBinding?
body: <p>I have a user control which datacontext is set to a view model. The user control contains some textblocks and textboxes which are bind to view model's properties. I would like to do a small animation when a view model's property's value changes but I can't seem to find a way to do this in Silverlight. </p>
  
  <p>In WPF we can use properties like NotifyOnTargetUpdated and Binding.TargetUpdated to capture the change but they seem to be missing from Silverlight. In my case the animation isn't based on the property's value, meaning I don't want to start the animation when some property's value is for example 5. Instead the animation should start every time the property's value is changed (to highlight the changed content for the user). </p>
  
  <p>Here's the answer on how to do this in WPF: <a href="https://stackoverflow.com/questions/1165862/animate-wpf-text-when-binding-updates-how">Animate WPF Text when binding updates, how?</a></p>
  
  <p>But how can I do the same with Silverlight 4?</p>