SharePoint工作流实战：Windows Workflow Foundation 4.0解决方案精选

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SharePoint工作流是Microsoft Windows Workflow Foundation 4.0中的核心组件，它在企业级协作和自动化流程管理中发挥着关键作用。《Microsoft Windows Workflow Foundation 4.0 Cookbook》是一本实用的指南，由Andrew Zhu编著，由Birmingham-Mumbai的Packt Publishing出版。这本书提供了超过70个实践操作、可以直接实施的工作流解决方案，旨在帮助开发者理解和开发高效、定制化的SharePoint工作流。该书涵盖了从基础概念到高级应用的广泛范围，包括但不限于以下几个方面： 1. **工作流基础**：介绍工作流的概念，如何在SharePoint环境中创建、管理和执行工作流，以及工作流引擎的工作原理。 2. **活动与任务处理**：讲解如何设计和配置工作流中的活动，如条件判断、循环、数据处理等，以及如何分配和跟踪任务给用户或团队成员。 3. **事件驱动与触发器**：讨论如何设置工作流的触发条件，如文档创建、修改或删除事件，以及如何根据这些事件自动启动工作流。 4. **业务逻辑集成**：探讨如何将工作流与其他系统和服务（如数据库、外部API）集成，实现数据交换和流程协同。 5. **错误处理与监控**：介绍如何处理工作流运行时可能出现的错误，以及如何通过监控工具来确保流程的稳定性和效率。 6. **最佳实践与案例研究**：书中包含众多实际案例，展示如何解决各种场景下的工作流问题，提供可供参考的实践方案。 7. **版本控制与权限管理**：关注工作流的安全性，如何设置不同用户或组对工作流的访问权限，以及如何确保工作流版本的管理和历史记录。 8. **性能优化**：介绍如何优化工作流的设计，减少执行时间，提高系统的响应速度和并发处理能力。 9. **升级与迁移**：对于那些使用旧版本工作流的读者，还涉及了向WF 4.0迁移的策略和技术。请注意，由于版权原因，未经Packt Publishing的书面许可，本书内容不能任何形式的复制、存储或传播。尽管作者和出版社已经尽力保证信息的准确性，但书中提供的所有内容均不带任何明示或默示的保修。在使用工作流进行实际项目时，请自行评估风险并确保遵循相关法律和政策。

Preface

WF4 is a process engine, as well as a visual program language, shipped along with Microsoft

.NET Framework 4.0. Traditionally, when we design a long-running application, we break

a large application into lots of small code blocks to address the business logic and use a

database to store the intermediate data. With the growing complexity of logic, managing code

blocks and authoring logic workows becomes difcult. Now, with WF4, we can design and

create distributed, long-running programs easily.

The aim of this book is to provide a step-by-step guide to help us start WF4 programming.

Every recipe in this book is runnable.

What this book covers

Chapter 1, Workow Program, provides recipes that will help us understand basic information

about WF4 programming.

Chapter 2, Built-in Flow Control Activities, provides recipes that demonstrate the usage of the

built-in control activities.

Chapter 3, Messaging and Transaction, provides recipes that demonstrate how to send and

receive WCF messages in workow. The second part of this chapter focuses on applying

transactions in a workow program.

Chapter 4, Manipulating Collections, demonstrates how to manipulate collection data in

workow programs with WF4 built-in activities.

Chapter 5, Custom Activities, demonstrates how to create our own custom activities; the most

powerful unit of workow.

Chapter 6, WF4 Extensions, demonstrates how to use the built-in extensions such as

persistence and tracking, and also how to create our own extensions.

Preface

Chapter 7, Hosting Workow Applications, mainly explains how to host workow applications

in IIS7. This chapter also provides recipes that demonstrate host workow in ASP.NET, WPF,

and Windows Forms.

Chapter 8, Custom Workow Designer, helps us create our own WF4 workow designer with

visual tracking function.

What you need for this book

We need a PC having Windows Vista/7/2008/2008R2. We can also use Windows XP, but it

is not recommended. .NET Framework 4.0 is a must. Once we install .NET Framework 4.0, we

can run workow applications. To develop WF4 workow applications, we should also have

Visual Studio 2010 installed on our computer. To host WF4 as a WCF service in IIS, we should

install IIS7/7.5 in our computer.

Who this book is for

If you nd yourself working with Windows Workow Foundation 4.0 and you have basic

knowledge of C#/.NET Framework/VB and workow, this book is for you. It will be best if you

know both C# and VB, because WF 4.0 expressions can be written only in VB (at the time of

writing). With this book, you will be able to enhance your applications with exible workow

capabilities using WF 4.0. To follow the recipes, you will need to be comfortable with .NET

Framework, C# programming, and the basics of SOA and how to develop them.

Conventions

In this book, you will nd a number of styles of text that distinguish between different kinds of

information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text are shown as follows: "The

ActivityLibrary project is for all customized

activities, whereas the WorkflowConsoleApp project is used for testing our customized

activities".

A block of code will be set as follows:

class Program {

static void Main(string[] args) {

WorkflowInvoker.Invoke(GetCodeStyleWorkflow());

}

Any command-line input or output is written as follows:

.NET Framework 4 Full (32-bit) – silent repair

%windir%\Microsoft.NET\Framework\v4.0.30319\SetupCache\Client\setup.exe /

repair /x86 /x64 /ia64 /parameterfolder Client /q /norestart

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