Book Image

Hands-On Object-Oriented Programming with C#

By : Raihan Taher
Book Image

Hands-On Object-Oriented Programming with C#

By: Raihan Taher

Overview of this book

Object-oriented programming (OOP) is a programming paradigm organized around objects rather than actions, and data rather than logic. With the latest release of C#, you can look forward to new additions that improve object-oriented programming. This book will get you up to speed with OOP in C# in an engaging and interactive way. The book starts off by introducing you to C# language essentials and explaining OOP concepts through simple programs. You will then go on to learn how to use classes, interfacesm and properties to write pure OOP code in your applications. You will broaden your understanding of OOP further as you delve into some of the advanced features of the language, such as using events, delegates, and generics. Next, you will learn the secrets of writing good code by following design patterns and design principles. You'll also understand problem statements with their solutions and learn how to work with databases with the help of ADO.NET. Further on, you'll discover a chapter dedicated to the Git version control system. As you approach the conclusion, you'll be able to work through OOP-specific interview questions and understand how to tackle them. By the end of this book, you will have a good understanding of OOP with C# and be able to take your skills to the next level.
Table of Contents (16 chapters)

Methods in a class

Let's talk about another important topic—namely methods. A method is a piece of code that is written in the code file and can be reused. A method can hold many lines of code, which will be executed when it is called. Let's take a look at the general form of a method:

access-modifier return-type method-name(parameter-list) {
// method body
}

We can see that the first thing in the method declaration is an access-modifier. This will set the access permission of the method. Then, we have the return-type of the method, which will hold the type that the method will return, such as string, int, double, or another type. After that, we have the method-name and then brackets, (), which indicate that it is a method. In the brackets, we have the parameter-list. This can either be empty or can contain one or more parameters. Finally, we have curly brackets...