Essential C# 5.0

15. LINQ with Query Expressions

The end of Chapter 14 showed a query using standard query operators for GroupJoin(), SelectMany(), and Distinct(), in addition to the creation of two anonymous types. The result was a statement that spanned multiple lines and was rather more complex and difficult to comprehend than statements typically written using only features of C# 2.0. Modern programs that manipulate rich data sets often require such complex queries; it would therefore be nice if the language made them easier to read. Domain-specific query languages such as SQL make it much easier to read and understand a query, but lack the full power of the C# language. That is why the C# language designers added query expressions syntax to C# 3.0. With ...