You're reading from Learn C# Programming A guide to building a solid foundation in C# language for writing efficient programs

Product type Paperback

Published in Apr 2020

Publisher Packt

ISBN-13 9781789805864

Length 636 pages

Edition 1st Edition

Languages

Tools

.NET

Concepts

Programming Language

Authors (4):

Raffaele Rialdi

Ankit Sharma

Prakash Tripathi

Marius Bancila

Preface

1. Chapter 1: Starting with the Building Blocks of C#

2. Chapter 2: Data Types and Operators FREE CHAPTER

3. Chapter 3: Control Statements and Exceptions

4. Chapter 4: Understanding the Various User-Defined Types

5. Chapter 5: Object-Oriented Programming in C#

6. Chapter 6: Generics

7. Chapter 7: Collections

8. Chapter 8: Advanced Topics

9. Chapter 9: Resource Management

10. Chapter 10: Lambdas, LINQ, and Functional Programming

11. Chapter 11: Reflection and Dynamic Programming

12. Chapter 12: Multithreading and Asynchronous Programming

13. Chapter 13: Files, Streams, and Serialization

14. Chapter 14: Error Handling

15. Chapter 15: New Features of C# 8

16. Chapter 16: C# in Action with .NET Core 3

17. Chapter 17: Unit Testing

18. Assessments

19. Other Books You May Enjoy

Chapter 5

Object-oriented programming is a paradigm that allows us to write a program around objects. Its core principles are abstraction, encapsulation, inheritance, and polymorphism.
Encapsulation allows us to hide the data inside a class from the outside world. Encapsulation is important because it reduces the dependencies between different components by defining minimal public interfaces for them. It also increases code reusability and security and makes code easier to unit test.
Inheritance is a mechanism through which a class can inherit the properties and functionalities of another class. C# supports single inheritance but only for reference types.
A virtual method is a method that has an implementation in a base class but can be overridden in derived classes, which is helpful for changing or extending implementation details. The implementation in the base class is defined with the virtual keyword. The implementation in a derived class is called an overridden...