C# Intermediate: Classes, Interfaces and OOP

The second course in Mosh Hamedani’s C# series focuses on object-oriented design. Classes and their members lead into interfaces and choices about reuse. It suits learners who can already write basic C# and now need to explain why responsibilities are grouped in particular ways.

What you will learn

• Design C# classes and their members.
• Use interfaces and encapsulation.
• Compare inheritance with composition.

Who this suits

Learners who understand C# variables, type conversion, classes, conditionals and loops, following the stated prerequisites.

Before you enroll

Compare the .NET version and development environment used in the course with your intended project. Language foundations remain useful, but older framework or desktop examples may need adaptation. Build and test a small application independently before relying on a copied example.

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Put it into practice

Model a fictional notification system with an interface, then compare an inheritance-based design with a composition-based alternative.

Source and review

This overview is based on the provider's published information, checked on 12 October 2026. It is an editorial assessment, not a claim that we completed the resource. Time filters are approximate study ranges; projects and exercises can take longer.

Where a formal level is unavailable, the level filter is an editorial estimate based on the published audience and requirements. Duration filters reflect the listed video time; exercises and independent practice can take longer.

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Supporting provider sources

• support.udemy.com: supporting course information