Considering workflow programs as imperative programs, we need to think of three fundamental things:

In WF4, we can define a workflow in either managed .NET code or in XAML. There are two kinds of code workflow authoring styles:

There are also two ways to author workflow in XAML:

Essentially, a workflow program is a .NET program, no matter how we create it.

After defining workflows, we can build workflow applications as we build normal .NET applications.

When it comes to workflow execution, we need to consider three basic things:

This chapter is going to focus on answering these questions.

Before moving ahead, make sure we have the following installed on our computer:

We can also use Windows XP; however, its usage is not recommended.