Book Image

WCF 4.0 Multi-tier Services Development with LINQ to Entities

By : Mike Liu
Book Image

WCF 4.0 Multi-tier Services Development with LINQ to Entities

By: Mike Liu

Overview of this book

WCF is the Microsoft model for building services, whereas LINQ to Entities is the Microsoft ORM for accessing underlying data storage. Want to learn both? You would normally have to dig through huge reference tomes—so wouldn't you agree that a simple-to-follow practical tutorial on WCF and LINQ to Entities is the way to get ahead?This book is the quickest and easiest way to learn WCF and LINQ to Entities in Visual Studio 2010. WCF and LINQ to Entities are both powerful yet complex technologies from Microsoft—but you will be surprised at how easily this book will get you get up and running with them.Mastery of these two topics will quickly enable you to create Service-Oriented applications, and allow you to take your first steps into the world of Service Oriented Architecture without becoming overwhelmed.Through this book, you will learn what's going on behind the scenes with WCF, and dive into the basic yet most useful techniques for LINQ to Entities. You will develop three real-world multi-tiered WCF services from beginning to end, with LINQ to Entities being used in the data access layer of the services. Various clients including windows console applications, the WCF Test Client, Windows Form applications and WPF applications will be created to test these WCF services. By the end of this book, you will be 100% confident that you know WCF and LINQ to Entities, not only in theory, but with sound real-world experience.
Table of Contents (16 chapters)
WCF 4.0 Multi-tier Services Development with LINQ to Entities
About the Author
About the Reviewers

Chapter 4. Implementing a WCF Service in the Real World

In the previous chapter, we created a basic WCF service. The WCF service we created, HelloWorldService, has only one method, called GetMessage. Because this was just an example, we implemented this WCF service in one layer only. Both the service interface and implementation are within one deployable component.

Note that the service we will create in the next two chapters is only a simplified version of a real-world WCF service. In a real-world situation, there is no doubt that the WCF service would contain more custom scenarios, more business logics, and more data constraints. For learning purposes, here we will just create a WCF service in three layers, with minimum business logic and some basic functionality. After you have acquired the basic skills to create the framework for a layered WCF service, you can customize this solution to your own needs.

Another thing I want to mention here is the design pattern that the next two chapters...