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WCF Multi-layer Services Development with Entity Framework - Fourth Edition

You're reading from   WCF Multi-layer Services Development with Entity Framework - Fourth Edition Create and deploy complete solutions with WCF and Entity Framework

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Product type Paperback
Published in Oct 2014
Publisher
ISBN-13 9781784391041
Length 378 pages
Edition 1st Edition
Tools
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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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Toc

Table of Contents (15) Chapters Close

Preface 1. Implementing a Basic HelloWorld WCF Service FREE CHAPTER 2. Hosting the HelloWorld WCF Service 3. Deploying the HelloWorld WCF Service 4. Debugging the HelloWorld WCF Service 5. Implementing a Three-layer WCF Service 6. Adding Database Support and Exception Handling 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 11. Building a RESTful WCF Service 12. WCF Security 13. Extending WCF Services Index

Viewing the generated SQL statements


You might wonder which SQL statements are used by LINQ to Entities to interact with the databases. In this section, we will use two ways to view the generated SQL statements used by LINQ to Entities queries. The first one is to use the ToString method and the second one is to use SQL Profiler.

Viewing the SQL statements using ToString

First, let's write a new test method to contain one LINQ to Entities query:

        static void ViewGeneratedSQL()
        {
            using(var NWEntities = 
                new NorthwindEntities())
           {

            var beverages = 
                from p in NWEntities.Products
                where p.Category.CategoryName == "Beverages"
                orderby p.ProductName
                select p;
            }
        }

Now, we can print out the SQL statement of the LINQ to Entities query using the following statement:

       // view SQL using ToString method
       Console.WriteLine("The SQL statement is:" +...
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