31.8. Summary
This chapter examined a number of related WPF topics, all of which are focused on the construction of custom user controls. You started by investigating how WPF places a unique spin on traditional .NET programming primitives, specifically properties and events. As you have seen, a dependency property allows you to build a property which can integrate within the WPF set of services (animations, data bindings, styles and so on). On a related note, routed events provide a way for an event to flow up or down a tree of markup.
You then examined the relationship between a logical tree and visual tree. The logical tree is basically a one-to-one correspondence of the markup you would author to describe a WPF root element. Behind this logic ...
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