My model classes are automatically generated from the database by Entity Framework, so they cannot implement INotifyPropertyChanged. I have this in my XAML:
<DataGrid ItemsSource={Binding CollectionView}/>
and in the class that acts as DataContext:
public ICollectionView CollectionView { get; set; }
private DbSet _data;
and in its constructor:
_data.Load();
CollectionView = CollectionViewSource.GetDefaultView(_data.Local);
Another part of the application makes a database update, which changes one property of an entity instance. After this I call
_data.Load();
CollectionView.Refresh();
but the update does not appear in the DataGrid. What should I do?
What's weird to me is that I could make a database insert appear with _data.Load() so I got the impression that this call completely rebuilds the Local collection from the database.
It turns out the problem was that the view that modified the database and the view that displayed the data were using two different instances of the same DbContext class; wrapping it with a singleton fixed the problem.