SOLID Principles in C# for Clean Software Architecture — PickAClass
3.7 (3) ⏱ 2h 36m 📚 26 lessons

SOLID Principles in C# for Clean Software Architecture

Master the five core principles of object-oriented design in C# to write clean, maintainable, and highly extensible software.

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About this course

Writing code that works is only the first step; writing code that is easy to maintain, scale, and test as your application grows is the real challenge. If you have ever struggled with messy, tightly coupled codebases, mastering object-oriented design principles is the key to elevating your development skills. This course guides you through the foundational concepts of software architecture using C#, focusing on the industry-standard SOLID design principles. You will transition from writing basic procedural scripts to designing robust, flexible, and clean object-oriented systems that can easily adapt to changing business requirements. What you'll learn: - Understand the foundational concepts of object-oriented design and why clean architecture matters - Apply the Single Responsibility Principle to create focused, highly cohesive classes - Implement the Open/Closed Principle to extend system functionality without modifying existing code - Practice the Liskov Substitution and Interface Segregation Principles to design intuitive, robust class hierarchies - Configure loose coupling using the Dependency Inversion Principle alongside modern .NET dependency injection patterns - Analyze common architectural code smells and refactor legacy C# code into clean, testable structures The course begins with core definitions and basic architectural concepts before walking you through each of the five SOLID principles using clear, written C# code examples. You will read through practical refactoring scenarios that demonstrate how to transform fragile code into a maintainable design. This course is designed for beginner to intermediate C# developers who want to improve their software design skills. No advanced architectural experience is required, though a basic understanding of C# syntax and object-oriented programming concepts is recommended. Start reading today to build a stronger foundation in professional software design.

What you'll get

  • 📜 Certificate of completion
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  • 💬 Personal AI tutor
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 36m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
SOLID Principles in C# for Clean Software Architecture
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
SOLID Principles in C# for Clean Software Architecture
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (3)

Piotr Nowak PL Verified learner
★ 5 · July 20, 2026

Loved the practical examples! They really brought the concepts to life. The course was well-organized and easy to navigate.

Daniel Robinson NZ
★ 3 · July 14, 2026

Brilliant course design. The way concepts build on each other is seamless. Very practical and well-explained.

최지우 KR
★ 3 · May 30, 2026

It was a decent course overall. Some parts moved a bit fast for me, but the core concepts were explained well. Good for a foundational understanding.

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Yes — full refund within 14 days, no questions asked.

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Forever. Once you purchase, the course is yours to revisit anytime.

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Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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