Flexicon Technology

23/03/2026

C # Dependency Injection Explained (Without ASP.NET Core) | Clean Architecture Fundamentals

Dependency Injection is one of the most important concepts in modern software development.

In this lesson, we break it down in pure C # (without ASP.NET Core) so you can truly understand how it works behind the scenes.

In this video, you’ll learn:

✔ What tight coupling really means
✔ Why Dependency Injection exists
✔ Constructor Injection step-by-step
✔ Interface-based design
✔ Inversion of Control (IoC)
✔ Writing clean, testable code

This lesson prepares you for:

• ASP.NET Core
• Clean Architecture
• Scalable backend systems
• Technical interviews

If you want to move from beginner to professional developer, this concept is essential.

Link to Video here: https://www.youtube.com/watch?v=kz1xgZ9PXaU&t=23s

Most developers use Dependency Injection in ASP.NET Core… but don’t truly understand how it works.In this lesson, I break down Dependency Injection in pure C...

12/03/2026

Master Interfaces in C # — A Must-Know Skill for Professional Developers

In this lesson, we dive deep into Interfaces in C #, one of the most important concepts for building clean, scalable, and enterprise-level applications.
If you want to become a professional .NET developer, understanding interfaces is NOT optional.
In this video you’ll learn:
✔ What an interface really is
✔ Why interfaces prevent tight coupling
✔ How abstraction works in real-world backend systems
✔ How enterprise applications use interfaces
✔ Polymorphism through interfaces
✔ SOLID Principles (Open/Closed Principle)
We also build a real-world Notification System using:
• Email Notification
• SMS Notification
• Push Notification
• INotificationService
This lesson prepares you for ASP.NET Core, Dependency Injection, Clean Architecture, and technical interviews.
Watch the full lesson here:
https://www.youtube.com/watch?v=C4IyY6Iv2Xc&list=PLNutkISxOdo8zslo7FXBnVFtLcGV5AuxV&index=10
🔥 Comment “INTERFACE MASTERED” if abstraction finally makes sense.

In this lesson, we dive deep into Interfaces in C # — one of the most important concepts for writing clean, scalable, and enterprise-level applications.If you...

06/03/2026

How do real applications store logs and data?

In Lesson 8 of my C # series, I explain File Handling in C #.

You’ll learn:
• How to read files
• How to write files
• How applications store logs
• Practical developer examples

Watch the lesson here:

Lesson 8 of the C # Beginner to Professional series dives deep into one of the most important OOP concepts:Inheritance and Polymorphism — explained using real...

06/03/2026

Lesson 8 of the C # Beginner to Professional series dives deep into one of the most important OOP concepts:Inheritance and Polymorphism — explained using real...

06/03/2026

https://www.facebook.com/share/p/17A2GLKnHS/

Lesson 8 of the C # Beginner to Professional series dives deep into one of the most important OOP concepts:Inheritance and Polymorphism — explained using real...

19/02/2026

https://www.facebook.com/share/p/1HUiLPuyJ3/

💻 Stop writing messy if-else chains. Senior C # developers use switch expressions to write cleaner, faster, more maintainable code.In just 5 minutes, you'll ...

29/11/2025

🚀 NEW TUTORIAL FOR BEGINNERS —⁠ C # + VS CODE SETUP
Hi everyone! I just published a new step-by-step tutorial on how⁠ to set up Visual Studio Code for C # development.
The lesson will be available Premie⁠res 30/11/2025, 03:00.
If you're learning programming, starting back⁠end devel⁠opme⁠nt, or ref⁠reshing your skills, this video wi⁠ll help you set up everything correctly fr⁠om scratch.

In this tutorial, you w⁠ill learn:
✔ How to insta⁠ll the .NET SDK
✔ How to install Vi⁠sual Studio Code
✔ How to set up the C # Dev⁠ Kit + C # extensions
✔ How to create your first C # project
✔ How to run your first C # program⁠
✔ Common errors a⁠nd quick fixes

This is the first epis⁠ode in my C #⁠ & .NET Beginner Series, where I’ll be teaching b⁠ackend deve⁠lopment and real-world projects step-by-step.

🎥 Watch the video here:
👉 https://youtu.be/twLX2ajaXnA

If you find it helpful:
👍 Like
💬 Drop a comment
🔁 Shar⁠e with someone le⁠arning to code
🔔 Subscribe for more coding + AI tutori⁠als

Thank you for your support! Let’s grow and build together 💻🔥
— Omoefe Codes AI

In this step-by-step tutorial, I’ll show you how to set up Visual Studio Code (VS Code) for C # development — perfect for complete beginners or anyone reinsta...

25/05/2024

Dear Friends and Family,

I am truly grateful for all the wonderful birthday wishes! Your kind words and warm wishes made my day even more special. Thank you for thinking of me and for being a part of my celebration. Your support and friendship mean the world to me.

With heartfelt thanks,

Omoefe

18/03/2020