In the last few posts, I've been introducing the usage of certain interfaces that help use the MVVM pattern in Xamarin Forms applications. You can even find all that code and identify what I did in each post by switching branches in this repository.

In this post, I'll be talking about the ObservableCollection<T>, which isn't an interface, but does implement the INotifyCollectionChanged interface, which behaves similarly to the INotifyProeprtyChanged interface, and helps integrate notifications for when elements are added, deleted or updated within a collection.