In this chapter you’ll:

• Learn basic LINQ concepts.

• Query an array using a range variable and the from, where and select clauses.

• Iterate over LINQ query results.

• Sort a LINQ query’s results with the orderby clause.

• Learn basic interface concepts and how the IEnumerable<T> interface enables a foreach to iterate over an array or collection’s elements.

• Learn basic .NET collections concepts.

• Become familiar with commonly used methods of generic class List.

• Create and use a generic List collection.

• Query a generic List collection using LINQ.

• Declare multiple range variables in a LINQ query with the let clause.

• Understand how deferred execution helps make LINQ queries reusable.