How to group items in ListView solely in xaml

Question

To split into group i have the following code in xaml:

<ListView x:Name="lvPallets" ItemsSource="{Binding Entries}">
    <ListView.ItemTemplate>
        <DataTemplate>
            <WrapPanel>
                <Image Source="{Binding Image}"/>
                <TextBlock Text="{Binding Name}" Margin="5,5,5,5" VerticalAlignment="Center" />
            </WrapPanel>
        </DataTemplate>
    </ListView.ItemTemplate>
    <ListView.GroupStyle>
        <GroupStyle>
            <GroupStyle.HeaderTemplate>
                <DataTemplate>
                    <TextBlock FontWeight="Bold" FontSize="14" Text="{Binding Name}"/>
                </DataTemplate>
            </GroupStyle.HeaderTemplate>
        </GroupStyle>
    </ListView.GroupStyle>
</ListView>

To actually split into groups i added x:Name attribute and some code in code behind file:

public SimulationWindow()
{
    InitializeComponent();

    _viewModel = new SimulationWindowViewModel();
    DataContext = _viewModel;

    lvPallets.Loaded += foo;
}

void foo(object sender, EventArgs e)
{
    CollectionView view = (CollectionView)CollectionViewSource.GetDefaultView(lvPallets.ItemsSource);
    PropertyGroupDescription groupDescription = new PropertyGroupDescription("Group");
    view.GroupDescriptions.Add(groupDescription);
}

I would like to remove x:Name attribute and function foo. How can i do it?

Answer 1

It is possible to define a CollectionViewSource in the XAML, simply define it in the Resources of the parent and use it via x:Key.

<!-- Define CollectionViewSource -->
<Parent.Resources>
    <CollectionViewSource x:Key="GroupCVS" Source="{Binding Entries}">
        <!-- Group by the Property 'Group' -->
        <CollectionViewSource.GroupDescriptions>
            <PropertyGroupDescription PropertyName="Group" />
        </CollectionViewSource.GroupDescriptions>
    </CollectionViewSource>
</Parent.Resources>

<!-- use the CollectionViewSource -->
<ListView ItemsSource="{Binding Source={StaticResource GroupCVS}}">

Note: I haven't found a way to declare the CollectionViewSource directly in the ListView due it must be known before applied (-> StaticResource).