Chapter 4. C# 3.0 Technical Overview
LINQ is built on a set of language features included in C# 3.0 and C# 2.0. Each feature was carefully crafted to fulfill a vision. The purpose of this chapter is to describe all these key features and to show exactly how they align to make LINQ possible.
LINQ to Objects can be used to query the collections found in the
System.Collections.Generic namespace. These include
Dictionary<TKey, Value>. One particular C# type,
IEnumerable<T>, is implemented by all these classes and plays an especially important role in LINQ to Objects. One of the purposes of this chapter is to explain how
IEnumerable<T> and iterators contribute to the LINQ architecture. ...