.NET Courses

Windows Workflow Foundation

Workflow applications have unique constraints:

  • They often have to wait days, weeks, or months for events to occur, or for other activities to finish.
  • They shouldn't consume processor cycles while waiting.
  • They must survive machine resets.
  • They often require asynchronous control flow.
  • They often require the use of a compensation model, instead of traditional database transactions.

Meeting these requirements force developers to build a complex workflow infrastructure into their applications.

Windows Workflow Foundation (WF) provides a workflow infrastructure. With this WF-supplied runtime engine and a framework for implementing workflows, you can focus on the business logic, rules, and policies that you understand, rather than building workflow infrastructure plumbing.

In this 3 day course, you'll write several applications that will demonstrate how to build a range of workflow applications.

What you will learn

  • Why did Microsoft create Windows Workflow Foundation
  • The Windows Workflow Foundation architecture
  • The relationships between host, activity, and workflow
  • How to use the workflow compiler
  • How to use XAML to design workflows
  • How to design Workflows with and without Visual Studio.NET 2005
  • How to use the Visual Studio.NET 2005 Workflow Designer
  • How to use the features of the Windows Workflow Runtime class
  • How to design and build a Workflow Host
  • How to build Activities with Parallel Paths
  • How to use the Built-in Flow Control Activities
  • How to call External Methods from a Workflow
  • How to handle Events in a Workflow
  • How to use Composite Activities
  • How to Pass Data in and out of Workflows
  • How to use Workflow Rules Engine
  • How the Workflow and the Runtime interact
  • How to build Sequential Workflows
  • How to build State Machine Workflows
  • How to build Data or Policy Driven Workflows
  • How to handle Errors in Workflow
  • Understand Workflow Persistence
  • How to use ACID Transactions in a Workflow
  • How to use Compensation in a Workflow
  • How to build Custom Workflow Activities
  • How to track the state of your workflow

Course Outline

Overview of Workflow Foundation (WF)

  • What is Workflow?
  • What is Windows Workflow?
  • When to use and when not to use WF
  • Relationship between WF and BizTalk
  • Windows Workflow Architecture
  • Workflow Foundation Tools

Building Simple Workflows

  • Workflows and Activities
    • Windows Workflow Foundation Runtime
    • Hosts and Workflow Instances
    • Windows Workflows Foundation and XAML
    • Windows Workflow Foundation Designer for Visual Studio 2005
    • Passing Data in and Out of Workflows
    • Composite Activities
  • Basic Workflow Activities included with Workflow Foundation
    • Control Flow
    • Sequence and Parallel Activities
    • Calling External Methods
    • Events
  • Workflow Runtime Interaction

Different Styles of Workflow

  • Sequential Workflows
  • State Machine Workflows
  • Data or Rules Driven Workflows

Advanced Workflow Scenarios

  • Workflow Error Handling
  • Workflow Persistence
  • Dynamic updates of running workflows
  • Workflow Tracking
  • Transactions and Compensation

Custom Activities

  • Inadequacy of Basic Workflow Activities
  • Custom Activities Reveal the Real Power of Windows Workflow

All Content (c) 2000 - 2014 Reliable Software, Inc. All rights reserved.