C#: A Beginner's Guide (Beginners Guides) by Pat McGee

Author:Pat McGee
Language: eng
Format: mobi, epub
Publisher: McGraw-Hill Education
Published: 2015-01-02T08:00:00+00:00

Chapter 12

Interfaces

Key Skills & Concepts

Interface Syntax

Interface Hierarchies

Generic Interfaces

Existing .NET Interfaces

Interfaces declare public data members and methods that must be implemented in a class or struct. Interfaces are similar to abstract classes since interfaces also do not permit a base implementation. So why bother going through the trouble of creating an interface to enforce implementation of public members? A class can implement multiple interfaces but can inherit only from one base class. The interface, of course, also helps to enforce good object-oriented design. Understanding interfaces will also help with your understanding of really important C# structures like collections and LINQ. You might even need to use interfaces to enforce consistent accessibility for a series of classes in your own projects.

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