Chapter 14.2, Problem 14.6CP

Explanation of Solution

LINQ (Language Integrated Query):

A query language that is built into C# and that can be used to query data from many sources is termed as LINQ.

• There are two ways to write a LINQ query, one way is to use query syntax and another way is to use method syntax.
• In case of query syntax, the C# compiler translates the queries into method calls which invoke the extension methods defined in the .NET framework.
• In case of method syntax, the extension methods are called directly.

Method syntax for the given query:

var results = retailItems...