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Microsoft Windows Workflow Foundation 4.0 Cookbook

By : Andrew Zhu

4 (7)

Microsoft Windows Workflow Foundation 4.0 Cookbook

4 (7)

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.

Microsoft Windows Workflow Foundation 4.0 Cookbook

Microsoft Windows Workflow Foundation 4.0 Cookbook

Credits

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

Foreword

Foreword

Preface

Preface

Free Chapter

Workflow Program

Workflow Program

Introduction

Creating the first WF program: HelloWorkflow

Creating a WF program using C# Code

Initializing a WF program using InArguments

Creating a WF program using OutArgument

Creating a WF program using InOutArgument

Using Variable in a WF program

Running a WF program asynchronously

Customizing a MyReadLine activity with Bookmark

Converting a WF program instance to XAML

Loading up a WF program from an XAML file

Testing a WF program with a unit test framework

Debugging a WF program

Built-in Flow Control Activities

Built-in Flow Control Activities

Introduction

Using the Foreach activity

A number guessing game in Sequence

A number guessing game using a flowchart

Using the InvokeMethod activity

Using the Switch<T> activity in Sequence workflow

Using the FlowSwitch<T> activity

Using the Parallel activity

Using the ParallelForEach<T> activity

Using the Pick activity

Handling errors

Messaging and Transaction

Messaging and Transaction

Introduction

Creating a pure WCF service

Receiving and replying to a WCF message

Receiving and replying to a WCF message in code workflow

Sending and receiving a reply to a WCF message

Sending and receiving a reply to a WCF message in code workflow

Using CancellationScope activity

Performing a transaction by using TransactionScope activity

Performing compensation by using Compensable activity

Performing manual compensation by using Compensate activity

Performing confirmation by using Confirm activity

Manipulating Collections

Manipulating Collections

Introduction

Printing collection items

Using AddToCollection<T> activity

Using ClearCollection<T> activity

Using RemoveFromCollection<T> activity

Using ExistsInCollection<T> activity

Custom Activities

Custom Activities

Introduction

Creating an activity by inheriting the root activity

Creating a FileWriter activity

Creating a SendEmail activity

Creating an Input Message activity using Bookmark

Creating an Asynchronous HTTP Get activity

Creating a Composite activity

Creating an Activity Designer for the SendEmail activity

Creating an Activity Designer for theMySquence activity

WF4 Extensions

WF4 Extensions

Introduction

Configuring ETW tracking

Creating FileTrackingParticipant

Configuring the SQL persistence store

Loading a persisted workflow from the database

Using a persistence participant to persist additional data

Using a customized extension

Hosting Workflow Applications

Hosting Workflow Applications

Introduction

Hosting a workflow service in IIS7

Hosting workflow in ASP.NET

Hosting workflow in WPF

Hosting workflow in a Windows Form

Custom Workflow Designer

Custom Workflow Designer

Introduction

Implementing designer layout

Implementing Toolbox, Workflow Designer, and Property Inspector views

Implementing New Workflow and Load Workflow events

Implementing Save and Save As events

Implementing XAML Workflow Tab and Run events

Implementing visual tracking

Index

Index

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About the Reviewers

Geert van Horrik, after finishing high school in 2001, decided he wanted to learn more about software development. During his education as a software engineer in university, he wrote a some applications using Delphi. Soon, he discovered the power of C++ and started writing open source projects.

During his study, one of his open source projects became very popular, and he spent most of his time writing new features for this project. After finishing education in Software Engineering cum laude, he decided to learn some more about business administration at another university. However, the combination of his addiction to software development and the open source projects made him quit the new study and start a company called CatenaLogic.

The most important product of CatenaLogic is Updater—a tool to easily deploy new versions of software on all clients. Geert van Horrik is also available as a freelance software developer, and mostly concentrates on the latest technologies such as C# and WPF.

Geert also loves helping other people with software development problems on forums, and tries to participate in open source projects in the spare time he has left.

Ryan Vice is an enterprise programmer with 10 years of experience working with Microsoft Enterprise solutions. Over those 10 years, he has worked on network security systems, high-volume e-commerce systems, title management systems, and a high-volume financial trading application. Additionally he has built workflow solutions for a geoseismic system and for a credit counseling management system. He has worked with both thick and thin clients and is currently specializing in the WinFX suite of tools. He was given Microsoft MVP in 2010 for connected systems and is an MSDN moderator. He also frequently teaches classes on WF throughout Texas.

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