C # set definition, set type, common non-generic set,

C # set definition, set type, common non-generic set,

Set Definition

A collection is like a container. It combines a series of similar components and is a special class. Like an array, it can be accessed through an index or a "key. different from traditional arrays, the set can be dynamically adjusted and elements can be added or deleted during operation.

Set Type

Generic set and non-generic set

Generic collection classes are generally located in the System. Collections. Generic namespace. Generic Collections can only store members of the specified Generic type.

A non-generic collection class is located in the System. Collections namespace. A non-generic set can store multiple types of members.

In addition, the System. Collections. Specialized namespace also has some collection classes.

Common Non-generic set

Dynamic Array ArrayList

Stack

Queue

Hash Table

Common generic set

Dictionary

List

Stack

Queue