I was looking at creating a common control that I will be able to reuse on my pages: an AddressControl which has Address1, Address2, City, State, Zip, etc...

Originally I just created a class (`AddressEntity`) that contained all these items and implemented `INotifyPropertyChanged`. I included that class as a DependencyProperty in my Code-Behind for the AddressControl and used it as the DataContext for the bindings to its properties.

Then, someone said my code was ugly and I should look into MVVM. Looking at it, I assume that:

* AddressEntity.cs will just be a container of data (i.e. Address1, Address2, etc.) and members (i.e. Clone, ToString, etc.)
* I need some AddressViewModel to wrap my AddressEntity in and provide the PropertyNotification Changes, Validation, etc.
* I need to somehow have a "View" for this.

The problem is every example I've ever seen has a UserControl as the View and not a CustomControl. Before I delve too deep into this...

* Is it possible to use MVVM + Custom Controls for this example?
* Is it pretty much the same thing (UserControl vs CustomControl) as the View with the exception of primary differences of UserControl vs CustomControl? Basically, is my CustomControl really just a View?

References: [The Model-View-ViewModel (MVVM) Design Pattern for WPF](https://msdn.microsoft.com/en-us/magazine/dd419663.aspx#id0090006)