M-V-VM and BackgroundWorker

In my app, the BackgroundWorker (housekeeping task) checks for data to be deleted from the database. After the data has been deleted do I then remove that DataItem from the开发者_JAVA技巧 ViewModel or the Model?

(Yes, I'm new to MVVM and perhaps I don't understand it too well yet).

Thanks.

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I'm not sure exactly what you're trying to accomplish, but I would caution about the Background Worker modifying the viewmodel as part it's DoWork method. Modifying the ViewModel suggests a change to the UI, which likely won't work since the DoWork method is not running on the UI thread.

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It depends on how your model and your view model are implemented, but conceptually, I'd

• remove the data from the model, which, in turn, should
  • cause the data to be removed from the database and
  • cause the view models to be notified, so that they can update their state appropriately.