In this book, we discovered the MVVM architectural pattern and explored the process of developing a WPF application, while taking advantage of this pattern's Separation of Concerns and adhering to its principals. We investigated a number of different ways of communicating between the various application layers and structuring our code base.

Importantly, we considered a variety of ways of debugging our WPF applications and tracking down our coding problems. In particular, we revealed some tips and tricks to help us to identify the causes of our data binding errors. In addition, we also learnt how viewing trace information can help us to detect problems, even after our applications have been deployed.

We moved on to investigate the benefit of utilizing an application framework and began designing and developing our own. We structured it in a way that did not tie our framework to any particular feature or technology and experimented with a variety of ways to encapsulate...