Book Image

Learn C# Programming

By : Marius Bancila, Raffaele Rialdi, Ankit Sharma
5 (1)
Book Image

Learn C# Programming

5 (1)
By: Marius Bancila, Raffaele Rialdi, Ankit Sharma

Overview of this book

The C# programming language is often developers’ primary choice for creating a wide range of applications for desktop, cloud, and mobile. In nearly two decades of its existence, C# has evolved from a general-purpose, object-oriented language to a multi-paradigm language with impressive features. This book will take you through C# from the ground up in a step-by-step manner. You'll start with the building blocks of C#, which include basic data types, variables, strings, arrays, operators, control statements, and loops. Once comfortable with the basics, you'll then progress to learning object-oriented programming concepts such as classes and structures, objects, interfaces, and abstraction. Generics, functional programming, dynamic, and asynchronous programming are covered in detail. This book also takes you through regular expressions, reflection, memory management, pattern matching, exceptions, and many other advanced topics. As you advance, you'll explore the .NET Core 3 framework and learn how to use the dotnet command-line interface (CLI), consume NuGet packages, develop for Linux, and migrate apps built with .NET Framework. Finally, you'll understand how to run unit tests with the Microsoft unit testing frameworks available in Visual Studio. By the end of this book, you’ll be well-versed with the essentials of the C# language and be ready to start creating apps with it.
Table of Contents (20 chapters)

Chapter 4: Understanding the Various User-Defined Types

In the previous chapter, we learned about control statements and exceptions in C#. In this chapter, we will explore the user-defined types in C#. We will learn how to create custom user types using classes, structures, and enumerations. We will explore what fields, properties, methods, indexers, and constructors are in a class. We will study the access modifiers in C# and learn how to use them to define the visibility of types and members. We will also learn about two important keywords in C#—this and static—and understand the ref, in, and out parameter modifiers for methods.

We will explore the following topics in detail:

  • Classes and objects
  • Structures
  • Enumerations
  • Namespaces

Good knowledge of these concepts is necessary to understand the object-oriented programming (OOP) concepts that we will cover in the next chapter.