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Examining the Initial Workflow Code

Before we add activities to represent our business process, let’s take a look at how this initial dia-

gram is represented internally. If you examine the ProcessUsernameWorkflow.cs file using Solution

Explorer, you will notice that much like other designer-maintained files (forms, windows, web

pages), a WF diagram consists of partial class definitions. When you open the core *.cs file, you will

find a class type that extends the SequentialWorkflowActivity type and a default constructor that

makes a call to the InitializeComponent() method:

public sealed partial class ProcessUsernameWorkflow : SequentialWorkflowActivity

{

public ProcessUsernameWorkflow()

{

InitializeComponent();

}

}