[WinRT] Binding ListView to CollectionViewSource in design time

It would be really useful if you could see all binded data in design time in VisualStudio or Blend.

To do this you should set page DataContext in xaml:

<Page.DataContext>
        <viewModels:MainPageViewModel />
</Page.DataContext>

In this case you will use the same ViewModel for design and run time. If ViewModel require different data loading logic for design and run time you should use Windows.ApplicationModel.DesignMode.DesignModeEnabled in ViewModel constructor to determine in witch mode ViewModel is loading. For example:

if (!Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
//Load data from run time
}
else
{
//Load data from design time
}

If you want you can set different ViewModel for design time. To do this set d:Page.DataContext in xaml:

<d:Page.DataContext>
        <viewModels:DesignTimeMainPageViewModel />
</d:Page.DataContext>

All bindings work fine in design time, except binding to static CollectionViewSource:

<Page.Resources>
        <CollectionViewSource
            x:Name="Balance"
            IsSourceGrouped="true"
            ItemsPath="Accounts"
            d:DesignSource="{Binding BalanceList}"
            Source="{Binding BalanceList}" />
</Page.Resources>
<Grid>
<ListView ItemsSource="{Binding Source={StaticResource Balance}}" />
</Grid>

To display data in ListView that binded through CollectionViewSource in design time I've moved CollectionViewSource instance to ViewModel layer.

    private CollectionViewSource balance;
    public ICollectionView Balance
        {
            get
            {
                if (balance == null)
                {
                    balance = new CollectionViewSource();
                    balance.IsSourceGrouped = true;
                    balance.ItemsPath = new Windows.UI.Xaml.PropertyPath("Accounts");
                    Binding binding = new Binding();
                    binding.Source = BalanceList;

                    BindingOperations.SetBinding(balance, CollectionViewSource.SourceProperty, binding);
                }

                return balance.View;
            }

            set
            { 
            }
        }

Every time when I reset BalanceList source collection, I call OnPropertyChanged("Balance"); to update binding.