WPF Binding filtered ObservableCollection ICollectionView to Combobox
问题 I want to filter an ObservableCollection to a subset based on type (type AddPoint) and want it ordered ascending with no duplicates. My base class is ModelBase, w/ sub-classes AddPoint, Time, Repeat, etc... The ObservableCollection MotionSequenceCollection will be filled w/ those types in any order and some will be duplicates. I've tried several different times and shown them below in the ICollectionView Property that I 'pulled' from: Bind subset of collection. OBSERVABLE COLLECTION private