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I've got a view which shows a listbox that is bound to GetAll() : <DockPanel> <ListBox ItemsSource="{Binding GetAll}" ItemTemplate="{StaticResource allCustomersDataTemplate}" Style="{StaticResource allCustomersListBox}"> </ListBox> </DockPanel> GetAll() is an ObservableCollection property in my ViewModel: public ObservableCollection<Customer> GetAll { get { return Customer.GetAll(); } } which in turn calls a GetAll() model method which reads an XML file to fill the ObservableCollection.: public static ObservableCollection<Customer> GetAll() { ObservableCollection<Customer> customers = new ObservableCollection<Customer>(); XDocument xmlDoc = XDocument.Load(Customer.GetXmlFilePathAndFileName()); var customerObjects = from customer in xmlDoc.Descendants("customer") select new Customer { Id = (int)customer.Element("id"), FirstName = customer.Element("firstName").Value, LastName = customer.Element("lastName").Value, Age = (int)customer.Element("age") }; foreach (var customerObject in customerObjects) { Customer customer = new Customer(); customer.Id = customerObject.Id; customer.FirstName = customerObject.FirstName; customer.LastName = customerObject.LastName; customer.Age = customerObject.Age; customers.Add(customer); } return customers; } This all works fine EXCEPT when the user goes to another view, edits the XML file and comes back to this view where the old data is still showing . Ho

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