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Software ==>	Visual C# (55 exercises)
Topic ==>	Entity Frameworks (1 exercise)
Level ==>	Relatively easy
Subject ==>	C# training

Listing authors and book counts using LINQ to SQL classes

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

Before you can do this exercise, you'll need to download and unzip this file.

If you haven't already done so, go into SQL Server Management Studio and open the file in the above folder and run its script. This should generate a Books database. Create an ADO entity model based upon this database.

The method of creating an entity model is not given here, since it varies according to which version of Windows Forms, Visual Studio, LINQ to SQL Classes and Entity Frameworks you are using. If in doubt, ask your trainer!

Here is one version of the entity framework to show you which tables and fields you can reference:

The database contains two tables with a relationship between them.

Use LINQ to SQL to list out all authors with the number of books they've written. The easiest way to do this is probably to create a new anonymous type with two properties: