Chapter 5. Activities
As the more astute among you will have already guessed, this chapter is all about activitieswhat they are, how they work, what's available, and how to build our own. We'll cover the out-of-the-box activities provided by the Windows Workflow Foundation (WF) that are usable from our Office workflows, as well as the activities that are added with SharePoint. Finally, we'll end the chapter with a review of the activity architecture as well as a walkthrough of building our own custom activity.
So, jumping right inactivities, what are they? Simply put, activities are the building blocks of a workflow. Generically, an activity is just a componentno different than any other .NET custom control.
At a very high level, two types of activities ...