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How can I filter the ItemSources of two ListBoxes that have a common CollectionViewSource

Hi,
I have a WPF MainWindow that has a CollectionViewSource in the Window.Resources section.
In the main layout grid I have two ListBox controls.
I would like to use a filtered version of the CollectionViewSource for each listbox, so that they each show different ListItems from the common source.
Is there any way I can do this?
Preferrably by using a property (or attached property) in xaml on each ListBox as a way of determining the filter.

Bob Learned

I don't quite understand what you are working with, and what you are asking for...

quentinA

ASKER

I have a list of Asterix the Gaul characters with their hair color:

public MainWindowViewModel()
{
this.AsterixCharacters = new ObservableCollection<AsterixCharacter>();

this.AsterixCharacters.Add(new AsterixCharacter("Asterix", HairColor.Blond));
this.AsterixCharacters.Add(new AsterixCharacter("Assurancetourix", HairColor.Blond));
this.AsterixCharacters.Add(new AsterixCharacter("Maestria", HairColor.Blond));
this.AsterixCharacters.Add(new AsterixCharacter("Idefix", HairColor.White));
this.AsterixCharacters.Add(new AsterixCharacter("Goudurix", HairColor.Blond));
this.AsterixCharacters.Add(new AsterixCharacter("Mme Agecanonix", HairColor.Red));
this.AsterixCharacters.Add(new AsterixCharacter("Gueuselambix", HairColor.Blond));
this.AsterixCharacters.Add(new AsterixCharacter("Panoramix", HairColor.White));
this.AsterixCharacters.Add(new AsterixCharacter("Pepe", HairColor.Black));
this.AsterixCharacters.Add(new AsterixCharacter("Obelix", HairColor.Red));
this.AsterixCharacters.Add(new AsterixCharacter("Abraracourcix", HairColor.Red));
}

public ObservableCollection<AsterixCharacter> AsterixCharacters;

.....................................................
the MainWindow is set up to use the collection above for its <CollectionViewSource>

private void Window_Loaded(object sender, RoutedEventArgs e)
{
asterixCharacters = new ObservableCollection<AsterixCharacter>(new MainWindowViewModel().AsterixCharacters);
cvs = (CollectionViewSource)(this.FindResource("cvs"));
cvs.Source = asterixCharacters;
view = (ListCollectionView)CollectionViewSource.GetDefaultView(cvs);
}

................................................
the MainWindow has 2 listboxes:

<Window.Resources>
<CollectionViewSource x:Key="cvs"/>
</Window.Resources>

<Grid>
<ListBox />
<ListBox/>
</Grid>
.....................................................

I would like to have a property on each ListBox, that can be assigned in XAML, that causes one listbox to show those Asterix characters with blond hair; and the second listbox to show those characters with red hair.
Ultimately, i'm trying to understand this in order to make a custom control out of a listbox a few buttons and a combobox.
............................................................

ASKER CERTIFIED SOLUTION

politex

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