Question

In Silverlight for Windows Phone I have several view models that are disposable and perform necessary cleanup, like event unsubscribing from longer-living services, in Dispose().

When I navigate back in the view stack and the most recent view model have done its deed to completion, I need to call Dispose() on it.

What good patterns of doing this in a structured way are there?

Answer 1

You could make a Blend Behavior or attached property that listens for the Unloaded event, and then calls Dispose() on the DataContext of the object if it’s IDisposable. This could then be attached to your Views as appropriate.