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 14

  1. The code that may potentially throw an exception must be put inside a try block.
  2. Inside the catch block, you may primarily want to try to recover the error. The recovery strategy may be very different and may vary from reporting a friendly error to the user to repeating the operation with different parameters. Logging is another typical operation done in the catch block.
  3. The exception type specified in the catch block captures exceptions matching the same type or any derived types. For this reason, the ones lower in the hierarchy must be specified last. In any case, the C# compiler will generate an error whenever the order is not correct.
  4. By specifying the variable name in the catch statement, you get access to the exception object. It provides important information such as the message and other information that is very precious when logging an error. The exception object can also be used as the inner exception parameter when creating a new, more specific...