Like other programs you have written, a WF program is a set of program statements that solves some problem. You can write an Open, Sesame program in XAML just like you can write such a program in C#. But, as we saw in Chapters 3, “Activity Execution,” and 4, “Advanced Activity Execution,” WF programs execute differently than regular C# programs because WF program statements—activities—are resumable.
In this chapter, we will take a closer look at how activity types and WF programs are defined. We will begin by focusing on the capabilities of
DependencyObject, the class from which
Activity derives. This will lead us to discussions of activity metadata, activity databinding, and attached properties.
Additionally, an activity ...