Wpf listview not updating

The filter is working ok when the Grid View is loaded, item's are showing or not based on the property 'Is Eco Generated'.

The problem is that the Grid View is not updated and removing item's if I set the property 'Is Eco Generated' to true on one (or several) of the items.

Code is a little difficult to read and you make no reference to your XAML.

_Song Library = New Observable Collection(Of ASong) End Sub End Class When I add a song, it doesn't show up in the List View (actually, even the List View doesn't show up upon start.

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