WHAT’S IN THIS CHAPTER?
WROX.COM CODE DOWNLOADS FOR THIS CHAPTER
This chapter presents an overview of the Windows Workflow Foundation 4.5 (referred to as WF and Workflow throughout the rest of this chapter), which provides a model to define and execute processes using a set of building blocks called activities. WF provides a Designer that, by default, is hosted within Visual Studio, which enables you to drag and drop activities from the toolbox onto the design surface to create a workflow template.
This template can then be executed in a number of different ways, as explained throughout the chapter. As a workflow executes, it may need to access the outside world, and there are a couple of methods typically used that enable you to do this. In addition, a workflow may need to save and restore its state, for example, when a long wait is needed.
A workflow is constructed from a number of activities, and these activities ...