PropertyGrid: Support expandable collections

[sa-he]

I want to show a collection of expandable complex types in the PropertyGrid.
I even found a solution that works fine. (https://stackoverflow.com/questions/36286530/xceed-wpf-propertygrid-show-item-for-expanded-collection)

Now, I wonder. Why are these two classes (ExpandableObservableCollection and ItemPropertyDescriptor) not part of wpftoolkit ifself? Is it possible to add them?

[sa-he]

In case anyone needs it https://www.nuget.org/packages/Extended.Wpf.Toolkit.PropertyGrid.Collection/

[Dirkster99]

In case this is still interesting for anyone, here is a simple workflow that lets you use the Extended WPF Toolkit with the fixed AvalonDock library in one single Nuget package: Use-fixed-AvalonDock-with-Extended-Wpf-Toolkit

[XceedBoucherS]

Please have a look at sample Data/PropertyGrid/Using SelectedObject(s)/Expanding non-primitives of the LiveExplorer, available here : https://xceed.com/xceed-toolkit-plus-for-wpf/.
It shows how to expand any collection properties.