The Last Word
In this chapter, you took a look at two advanced topics that could occupy entire books of their own. First you considered the multithreading considerations of WPF applications (which are essentially the same as the considerations for any other type of Windows application) and saw how to safely update controls from other threads and make multithreading easy with BackgroundWorker. Next you dove into the deeply layered add-in model. You learned how its pipeline works, why it works the way it does, and how to create basic add-ins that support host automation and provide visual content.
There's quite a bit more you can learn about the add-in model. If you plan to make add-ins a key part of a professional application, you'll want to ...
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