September 2010
Intermediate to advanced
272 pages
5h 16m
English
Content preview from Microsoft Windows Workflow Foundation 4.0 CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 2. Built-in Flow Control Activities
In this chapter we will cover:
- Using the Foreach Activity
- A number guessing game in Sequence
- A number guessing game in a flowchart
- Using the
InvokeMethodactivity - Using the
Switch<T>activity in Sequence workflows - Using the
FlowSwitch<T>activity - Using the Parallel activity
- Using
ParallelForEach<T>activity - Using the Pick activity
- Handling errors
Introduction
The Flow is the center of workflow itself, and how to control the Flow is what we will see in this chapter. WF is a lot like an imperative programming language such as C# when it comes to flow control; we have many similar concepts in WF4 such as "if-else", "foreach", "switch", "try-catch", and so on. Additionally, there are some other flow control activities ...