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Generic Class in 

Nongeneric Counterpart

System.Collections

Meaning in Life

LinkedList

N/A

A generic implementation of a

doubly linked list

ReadOnlyCollection

ReadOnlyCollectionBase

A generic implementation of a set

of read-only items

The System.Collections.Generic namespace also defines a number of auxiliary classes and

structures that work in conjunction with a specific container. For example, the LinkedListNode

type represents a node within a generic LinkedList, the KeyNotFoundException exception is

raised when attempting to grab an item from a container using a nonexistent key, and so forth.

As you can see from Table 10-5, many of the generic collection classes have a nongeneric coun-

terpart in the System.Collections namespace (some of which are identically named). Because the

generic classes mimic their nongeneric types so closely, I will not provide a detailed examination of

each generic item (once you understand how to work with a given container, the remaining items

are quite straightforward). Instead, I’ll make use of List to illustrate the process of working with

generics. If you require details regarding other members of the System.Collections.Generic name-

space, consult the .NET Framework 3.5 documentation.