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 3

  1. The selection statements in the C# language are if and switch.
  2. The default case of a switch statement can appear anywhere on the list. It is always evaluated last after all the case labels have been evaluated.
  3. A for loop allows us to execute a block of code as long as a Boolean expression evaluates to true. A foreach loop allows us to iterate through the elements of a collection that implements the IEnumerable interface.
  4. The while loop is an entry controlled loop. That means it executes a block of statements as long as a specified Boolean expression evaluates to true. The expression is checked before the block is executed. The do-while loop is an exit-controlled loop. This means the Boolean expression will be checked at the end of the loop. This ensures that the do-while loop will always be executed at least once, even if the condition evaluates to false in the first iteration.
  5. To return from a function, you can use return, yield, or throw. The first...