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)

Generic methods

C# allows us to create generic methods that accept one or more generic type parameters. We can create a generic method inside a generic class as well as a non-generic class. Both static and non-static methods can be generic. The rules for type inference are the same for all. The type parameters must be declared after the method name and just before the parameter list, within angle brackets, just like we did for types.

Let's understand how to use generic methods with the help of the example shown here:

class CompareObjects
{
    public bool Compare<T>(T input1, T input2)
    {
        return input1.Equals(input2);
    }
}

The non-generic class CompareObjects contains a generic method, Compare, which is used to compare two objects. This method is accepting two parameters—input1 and input2. We are using the Equals() method from the System.Object...