Mastering SOLID Principles of Object Oriented Design (C#)

Our verdict: worth it — as long as the Development skills on the syllabus match what you actually want to learn. The regular price for Mastering SOLID Principles of Object Oriented Design (C#) on Udemy is $149.99. With the coupon code on this page, that falls to $9.99 — a saving of $140.00, or 93% off the standard rate Spread across 2h of on-demand video, that works out to roughly $5.00 per hour of content — cheaper than a single chapter of most printed Development textbooks.

A cheap price means nothing if the material is thin — here the syllabus is organized around usable outcomes. Rahul Rajat Singh walks you through understand and effectively apply the five SOLID principles (SRP, OCP, LSP, ISP, DIP) in your software design to create clean, maintainable, and scalable code, learn techniques to refactor and improve existing codebases, ensuring better readability, reduced technical debt, and easier maintenance, and develop skills to design software systems that can adapt to changing requirements with minimal impact, promoting long-term project success — skills meant to be used, not just watched. It has already been taken by 2,087 students and holds a 4.8-star average from verified reviews, which suggests the content holds up once learners actually apply it.

Check the prerequisites before you commit: Basic Programming Knowledge; Experience with Object-Oriented Programming (OOP). Best suited to learners who already have footing in Development. Plan for roughly 2h of on-demand video at your own pace. Lessons are delivered in English.