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

Hosting workflow in ASP.NET

In this task, we will create an e-mail sending workflow and run it in an ASP.NET site.

Getting ready

We need an e-mail sending workflow service hosted in IIS7. We can refer to the previous section, Hosting a workflow service in IIS7, in this chapter.

How to do it...

  1. Create an ASP.NET4 web application:

    Create an ASP.NET4 web application and name it HostingWorkflowInASPNET. Because we are going to host WF4 workflow in this website, we have to make sure it is an ASP.NET4 website. To check the version, right-click the project name HostingWorkflowInASPNET and select Properties.

  2. Author a Workflow:

    1. Add an activity to the website and name it Workflow.xaml.

      Author the workflow as follows:

    2. Set the properties for SendEmail1:

    3. Set the parameters for SendEmail1:

    4. Set the properties of SendEmail2. The only difference as compared to SendEmail1 is the DisplayName.

    5. Set the parameters for SendEmail2:

  3. Alter the Default.aspx page:

    Add a Button control to the Default.aspx page:

    <%@ Page...