RadPersistenceFramework for Q3 2011
The PersistenceManager.GetStorage() method returns an object of type ObjectStorage that exposes the following properties:
Count - this property is of type int and it gets the number of persisted objects.
Items - this property gets the collection of persisted objects.
Keys - this property gets the collection of the persisted objects' StorageId values.
You can find more information about the GetStorage() method in the Isolated Storage article.