Early Preview

This is currently very much a preview. Please feel free to try things out, but don't be upset if anything is not yet working. Feedback is welcome over on our GitHub Dicussions page.

System.ObjectModel

Provides types and interfaces that allow the creation of observable types that provide notifications to clients when changes are made to it. Commonly Used Types: System.ComponentModel.INotifyPropertyChanged System.Collections.ObjectModel.ObservableCollection<T> System.ComponentModel.PropertyChangedEventHandler System.Windows.Input.ICommand System.Collections.Specialized.INotifyCollectionChanged System.Collections.Specialized.NotifyCollectionChangedEventArgs System.Collections.Specialized.NotifyCollectionChangedEventHandler System.Collections.ObjectModel.KeyedCollection<TKey, TItem> System.ComponentModel.PropertyChangedEventArgs System.Collections.ObjectModel.ReadOnlyDictionary<TKey, TValue> When using NuGet 3.x this package requires at least version 3.4.

Author Microsoft
Version 4.3.0
Tags

02/03/2026 01:52:38: Doc summary created

Thanks for showing interest in the docs for System.ObjectModel! Looks like you're the first one so we haven't generated the docs yet. Just push the button below to initiate background doc generation. The docs should be ready in a few seconds (up to a few minutes if there are many dependencies), just reload the page to see them!