The System.Collections namespace contains classes for storing collections of objects, including lists, hastables, queues, and stacks.

The System.Collections namespace contains useful classes for storing collections of objects.

All collections implement the interface, which provides basic functionality for iterating through the elements of a collection. Collections that support index-based access into their elements and the ability to add and remove elements, such as the , implement the interface. Collections that provide a key/value mapping, such as the , implement the interface.