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WCF 4.5 Multi-Layer Services Development with Entity Framework by Mike Liu

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Chapter 6. LINQ: Language Integrated Query

In the previous chapters of this book, we created a WCF service with three layers. In the data access layer, we used the raw ADO.NET SQL adapters to communicate with the Northwind database. In one of the following chapters, we will change the service to use LINQ to Entities in the data access layer.

Before using LINQ to Entities in our data access layer, we need to understand what LINQ or LINQ to Entities actually mean. Before understanding LINQ, we first need to understand some of the C# features related to LINQ. In this chapter, we will first explore these C# features related to LINQ and then we will explore LINQ. In the next two chapters, we will explore LINQ to Entities, and after that, we will apply ...

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