Question

Is it possible to bind one ObservableCollection to two Listbox ItemsSource’s in the same view?

public ObservableCollection<CameraListBoxItem> Window1CameraListBoxItems
{
    get { return cameraListBoxItems; }
}

<ListBox x:Name="DeviceList" ItemsSource="{Binding Window1CameraListBoxItems}" />
<ListBox x:Name="DeviceList2" ItemsSource="{Binding Window1CameraListBoxItems}" />

It doesn’t seem to work and I don’t understand why.

UPDATE

<DataTemplate DataType="{x:Type vm:WindowViewModel}">
    <vw:WindowView />
</DataTemplate>

Using MVVM the view is binded to the viewmodel.

public WindowViewModel(ObservableCollection<CameraListBoxItem> items)
{
    cameraListBoxItems = items;
}

Answer 1

Yes. You can bind as many elements as you wish to the same source property.

I would check the bindings debugging information in the Output Window. This may not be working because both bindings are incorrect, which could happen if the DataContext isn’t set properly.