Gain insights into OOP with C#. Delve into practical coding examples and exercises, exploring OOP concepts through a real-world vending machine project to understand and apply them effectively.

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Object-oriented programming (OOP) has been around for decades. As the original object-oriented language, C# is a mainstay in the world of computer programming.

All the concepts of object-oriented programming that C# developers love to have in their arsenal are explained in detail along with relevant coding examples and exercises in this course.

This course is unique in its nature as it follows a project-based learning approach. Throughout the course, a real-world example of vending machine is followed to help the learners develop a firm understanding of the stated OOP concepts.

The learners will not only be able to play around with the project,  they’ll also be able to see all the concepts in action in this project.

Learn Object-Oriented Programming in C#

# Method Overloading & Method Overriding

Beginner developers often get confused regarding the terms method overloading and method overriding. These are two completely different concepts.


Let's compare the differences below:

| **Method Overloading** | **Method Overriding** |
| --- | --- |
| It is done inside the same class. | Base and derived class(es) are required here. |
| Overloading happens at **compile time.** |  Overriding happens at **runtime** |
| Gives better performance because the binding is being done at compile time.  | Gives worse performance because the binding is being done at run time. |
| **Private** and **sealed** methods can be overloaded.  | **Private** and **sealed** methods can not be overridden. |
| Return type of the method does not matter in case of method overloading. | Return type of the method must be the same in the case of overriding. |
| Arguments must be different in the case of overloading. | Arguments must be the same in the case of overriding.  |
| Mostly used to increase the readability of the code. | Mostly used to have a separate implementation for a method that is already defined in the base class. 
| This happens at the compile time, so it can be referred to as *static or compile-time* polymorphism. | This happens at run time, so it can be called *dynamic or runtime polymorphism*.

In this lesson, you will get familiar with the differences between method overloading and method overriding.

Introduction to Object-Oriented Programming

Classes and Objects

Data Hiding

Inheritance

Polymorphism

Abstract Classes and Interfaces

Composition, Aggregation and Association

Difference Between Overloading and Overriding

Method Overloading & Method Overriding