We need to create own implementation of RadGrid server filtering and sorting without using OData Web Services.
So, if the user choose filter from GridView, we want to create query to our custom Web Service. Web Service will return filtered and sorted data.
RadGrid shouldn't filter data by self.
We've try to write own implementation of QueryableCollectionView and use it as grid ItemsSource. Our collection implements ICollectionView, IQueryableCollectionView.
Unfortunately doesn't work. RadGrid is still filtering data in memory.