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
Credits
About the Author
About the Reviewers
Preface
Index

Testing concurrency with our own client


Creating the test client

Now that the service is ready we need to create a client to test it. In this section we will create a WinForm client to get the product details and update price for a product.

Follow these steps to create the test client:

  • In Solution Explorer, right-click the solution item, and select Add | New Project…

  • Select Visual C# | Windows Forms Application as the template and change the name to LINQNorthwindClient. Click on the OK button to add the new project.

  • On the form designer, add the following five controls:

    • A label named lblProductID with text, Product ID

    • A textbox named txtProductID

    • A button named btnGetProduct with text, &Get Product Details

    • A label named lblProductDetails with text, Product Details

    • A textbox named txtProductDetails with the Multiline property set to True

    The layout of the form is like this:

  • In Solution Explorer, right-click on the LINQNorthwindClient project and select Add Service Reference….

  • On the Add Service...