C# Intermediate: Classes, Interfaces and OOP

An in-depth, step-by-step guide to classes, interfaces and object-oriented programming (OOP) with C#

  • Mosh Hamedani
  • 4.55
  • (30737 reviews)
  • 5.5 hrs
  • 45 lectures
  • Udemy
C# Intermediate: Classes, Interfaces and OOP

What you will learn?

  • Work with classes, constructors, fields, properties, methods and indexers
  • Use encapsulation to improve the robustness of the code and reduce the impact of change
  • Re-use code using inheritance and composition
  • Understand the problems with inheritance and how composition solves these problems
  • Change the behaviour of an application by extending its code, rather than changing it
  • Develop loosely-coupled, testable and extensible applications using interfaces

Your trainer

Mosh Hamedani

Hi! My name is Mosh (Moshfegh) Hamedani! I'm a passionate software engineer with two decades of experience and I've taught over 3 million people who to code or how to become professional software engineers through my YouTube channel and online courses.

My goal is to make software engineering fun and accessible to everyone. That's why my courses are simple, pragmatic and free of BS.

45 lessons

Easy to follow lectures and videos covering subject details.

5.5 hours

This course includes hours of video material. Watch on-demand, anytime, anywhere.

Certificate of Completion

You will earn a Certificate of Completion at the end of this course.

Course curriculum

About this Course06:21

  • What You are Going to Learn02:42
  • Who is Your Instructor01:27
  • Source Code00:02
  • Exercises00:46
  • Asking Questions00:33
  • Before You Get Started00:50

  • Introduction to Classes13:56
  • Constructors22:54
  • Object Initializers02:20
  • Methods23:59
  • Fields09:21
  • Access Modifiers10:48
  • Properties16:19
  • Indexers09:30
  • Summary7 pages
  • Exercises2 pages

  • Class Coupling03:45
  • Inheritance07:54
  • Composition07:27
  • Favour Composition over Inheritance08:48
  • Summary2 pages

  • Access Modifiers22:37
  • Constructors and Inheritance09:42
  • Upcasting and Downcasting17:45
  • Boxing and Unboxing07:09
  • Summary3 pages
  • Exercises3 pages

  • Method Overriding17:15
  • Abstract Classes and Members11:58
  • Sealed Classes and Members02:38
  • Summary3 pages
  • Exercises3 pages

  • What is an Interface?04:35
  • Interfaces and Testability25:12
  • Interfaces and Extensibility18:15
  • Interfaces are NOT for Multiple Inheritance04:26
  • Interfaces and Polymorphism11:47
  • Summary3 pages
  • Exercises2 pages

  • Final Words01:01
  • My Other Courses02:02
  • Get My Other Courses with a Discount00:20

  • StopWatch Exercise12:21
  • Stack Exercise07:24
  • Workflow Engine Exercise12:36
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