How to use DataGrid with DataGridCollectionView as ItemsSource and still use CompiledBindings?

[sn4k3]

I've a DataGrid with groups which I set ItemSource to a instance of DataGridCollectionView:

public ObservableDictionary<string, NameValueGroup> TabularData { get; } = new();
// ....
TabularDataGroupView = new DataGridCollectionView(TabularData);
TabularDataGroupView.GroupDescriptions.Add(new DataGridPathGroupDescription($"Value.{nameof(NameValueGroup.Group)}"));

However, I'm not able to use CompiledBindings anymore since the type is now DataGridCollectionView instead of ObservableDictionary<string, NameValueGroup>. Using ReflectionBinding works... How can I enforce the bindings type to the correct type?

[Shawnecy]

I struggled with the same problem initially. What I wanted was the ability to toggle datagrid grouping on and off in the UI via a checkbox. So in the OnIsCheckedChanged handler for that, I get the DataGrid's DataGridCollectionView instead of creating one:

private readonly DataGridPathGroupDescription _groupDescription = new(nameof(MyRecordClass.GroupId));

private void GroupCheckBox_OnIsCheckedChanged(object? sender, RoutedEventArgs e)
{
    if (sender is CheckBox checkBox)
    {
        if (checkBox.IsChecked == true)
        {
            ((DataGridCollectionView)MyDataGrid.CollectionView).GroupDescriptions.Add(_groupDescription);
        }
        else
        {
            ((DataGridCollectionView)MyDataGrid.CollectionView).GroupDescriptions.Clear();
        }
    }
}

I believe you could do something similar in regards to the DataGrid Initialized event (or whichever event leaves the CollectionView in a valid non-null state).

[sn4k3]

I solve it by pass the original collection, and then on constructor pass the group as ItemSource. It will work with compiledbindings

[hjrb]

When I simply change the ItemSource the binding does not react when I use RaisePropertyChanged on the DataGridCollectionView property of the viewmodel