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WCF 4.0 Multi-tier Services Development with LINQ to Entities

You're reading from   WCF 4.0 Multi-tier Services Development with LINQ to Entities Build SOA applications on the Microsoft platform with this hands-on guide updated for VS2010

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Product type Paperback
Published in Jun 2010
Publisher Packt
ISBN-13 9781849681148
Length 348 pages
Edition 1st Edition
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Author (1):
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Mike Liu Mike Liu
Author Profile Icon Mike Liu
Mike Liu
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Table of Contents (16) Chapters Close

WCF 4.0 Multi-tier Services Development with LINQ to Entities
Credits
About the Author
About the Reviewers
Preface
1. Introducing Web Services and Windows Communication Foundation 2. Implementing a Basic HelloWorld WCF Service FREE CHAPTER 3. Hosting and Debugging the HelloWorld WCF Service 4. Implementing a WCF Service in the Real World 5. Adding Database Support and Exception Handling to the RealNorthwind WCF Service 6. LINQ—Language Integrated Query 7. LINQ to Entities: Basic Concepts and Features 8. LINQ to Entities: Advanced Concepts and Features 9. Applying LINQ to Entities to a WCF Service 10. Distributed Transaction Support of WCF Index

Copying the connection string to the service layer


In the previous section we added an entity model to the data access layer project. The connection string is stored in the App.config file in the LINQNorthwindDAL project. However this configuration file is only used by the .NET Entity Modeler to retrieve schema information from the database at design time. At runtime the configuration file in the service interface layer is used to get the actual database connection string. So, in this section, we will copy and paste this connection string to the service interface layer project.

The following are the steps to add this connection string to the service interface layer:

  1. Open the file, App.config, in the LINQNorthwindDAL project.

  2. Copy the connection strings part in this file which should be like this:

    <connectionStrings>
      <add name="NorthwindEntities" connectionString="metadata=res://*/Northwind.csdl|res://*/Northwind.ssdl|res://*/Northwind.msl;provider=System.Data.SqlClient;provider...
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