Chapter 15. Collection Interfaces and Types

A collection is a container that holds a group of objects. Collections are used to hold all the strings in a listbox, to hold all the employees in a company, to hold all the controls on a page, and so forth. You've already seen the simplest collection, the array (see Chapter 14). An array is a collection that provides an indexed list of elements, all of the same type.

The .NET Framework provides a number of already built and tested collection classes, including the ArrayList, Collection, Queue, and Stack. This chapter will explain how to use these collections and will provide examples of their use.