Question

Cannot bind the CollectionViewSource

DocProps is a public property

public ObservableCollection<DocProp> DocProps1

DataContext is self

DataContext="{Binding RelativeSource={RelativeSource self}}"

This works

<ListBox Grid.Row="0" Grid.Column="0" ItemsSource="{Binding Path=DocProps1}">

I cannot wire up a CollectionViewSource to sort
This does not even get DocProps1

    <ListBox Grid.Row="0" Grid.Column="0">
        <ListBox.ItemsSource>
            <Binding>
                <Binding.Source>
                    <CollectionViewSource Source="{Binding Path=DocProps1}">
                        <CollectionViewSource.SortDescriptions>
                            <scm:SortDescription PropertyName="Name" />
                        </CollectionViewSource.SortDescriptions>
                    </CollectionViewSource>
                </Binding.Source>
            </Binding>
        </ListBox.ItemsSource>

How do I bind a CollectionViewSource to a public property?

Thanks

Answer 1

It will work this way:

<ListBox ItemsSource="{Binding}">
  <ListBox.DataContext>
    <CollectionViewSource Source="{Binding Path=DocProps1}">
    </CollectionViewSource>
  </ListBox.DataContext>    
</ListBox>

This article XAML Binding to a CollectionViewSource property on a ViewModel has some explanations of this behaviour