Book Image

Microsoft Windows Workflow Foundation 4.0 Cookbook

By : Andrew Zhu
Book Image

Microsoft Windows Workflow Foundation 4.0 Cookbook

By: Andrew Zhu

Overview of this book

Windows Workflow Foundation 4.0 (WF) is a significant part of .NET Framework 4.0. WF makes workflow technology available to every single programmer that uses the .NET Framework 4.0. It is easy to create long running and distributed programs using WF with the right knowledge. With this book, you will discover that working with workflows is easy. This book provides both step-by-step recipes and relevant background information. It covers all the important aspects of Windows Workflow Foundation 4.0. The best thing about this book is that all recipes are based on real-world experiences of Andrew Zhu. Andrew is a global WF and BizTalk technology support engineer for Microsoft. This book covers everything you need to know, when working with workflows. Get to grips with flow control activities, messaging, and transaction processes with easy to understand steps followed by explanations. You will quickly learn to use collection and custom WF activities and WF services.You will see recipes that illustrate integration of Windows Workflow with other applications such as WPF, ASP.NET, WCF service.Lastly, you will discover how easily you can customize W4 Designer with WF rule engine and others.
Table of Contents (15 chapters)
Microsoft Windows Workflow Foundation 4.0 Cookbook
About the Author
About the Reviewers

Using the FlowSwitch<T> activity

In the flowchart, we should use the FlowSwitch Activity instead of the Switch<T> activity, which we used in the previous task. In this task, we will create a flowchart workflow using the FlowSwitch<T> activity. This switch activity will operate on a string.

How to do it...

  1. Create a workflow project:

    Create a new Workflow Console Application project and name the project as UsingFlowSwitchActivity.

  2. Author a workflow:

    Open Workflow1.xaml and author a workflow as shown in the following screenshot. Please note that when we drag the Flowswitch activity to the flowchart, we will be shown a dialog to choose the type. In this task, we have chosen String.

    When we add the case links, please do not to add quotation marks ("") around the case branch. Because the Flowswitch activity will not only operate on strings but also other types.

  3. Run it:

    Set UsingFlowChartActivity as StartUp project. Press CTRL+F5 to build and run the workflow without debugging. A...