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)

Why do we need generics?

After seeing the previous example, you might wonder why we need generics when we can use the object type instead. The object type can be used for any type in C#, and the preceding example can be achieved through the use of an object type. Yes, the preceding example can be achieved through the use of the object type, but there won't be any type-safety. In contrast, generics ensure that the type-safety is there when the code gets executed.

If you are like me, you definitely want to know what type-safety is. Type-safety actually refers to keeping the type secure or unchangeable when executing any task in the program. This helps us reduce runtime errors.

Now, let's write the preceding program, using the object type instead of a generic, to see how generics can handle type-safety and object types can't:

using System;
using System.Collections.Generic...