Hi,

I have a 3-tier application (WCF, WPF, Prism, Unity and MVVM), I receive 1M models (for example Person) from the server which need to be shown in the XamDataGrid. My ViewModel exposes an ObservableCollection<PersonViewModel>, where PersonViewModel are simply wrapper around the model Person. Those wrapper are kind of big, and long to construct since the constructor parameters are mapped dynamically by unity framework. Would it be possible to lazy build those wrappers and ideally recycle them (basically virtualize them), so that only the shown records have a wrapper instance? It's require that the solution work with filtering, sorting and grouping!

Thanks,

Dominik