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


WF4 is one part of .NET Framework 4.0, which means WF4 workflow can be hosted and run in any type of application running with the .NET framework. We can host a workflow as a WCF service. We can also invoke a workflow service from a workflow or host workflow in an ASP.NET application and handle all the business logic behind the page.

When we design workflow applications, please let workflow be workflow. Don't couple workflow with other logic. For example, in this chapter, hosting workflow in ASP.NET is for conception demonstration only, not the best practice. In the real world, most of the time, workflow should be implemented as a workflow service hosted in IIS7 or AppFabric.

AppFabric is an IIS7 extension that includes many tools to help us host a workflow service. AppFabric is to workflow service like IIS7 is to ASP.NET website. However, we can run a workflow service in IIS7 without AppFabric installed. Although AppFabric is powerful, we need to spend some time to learn it....