Learn TDD in C# with xUnit and Moq. Write tests first, code second with practical examples, best practices, and common pitfalls. Start writing better C# today. Test-Driven Development (TDD) in C# flips the way most developers write code: instead of writing a feature and hoping your tests catch the bugs later, you write a failing test first , then write just enough code to make it pass. In this hands-on tutorial you'll learn TDD in C# using xUnit for testing and Moq for mocking dependencies. By the end you'll understand not just how to write tests first and code second, but why this workflow produces cleaner, more maintainable .NET applications. Whether you're a beginner searching for "how to write unit tests in C#", an intermediate developer chasing testing best practices, or a senior engineer refining your mocking strategy, this guide covers the full red-green-refactor cycle with runnable code examples. What Is TDD in C# and Why It Matters Test-Dr...
Learn C# interfaces vs abstract classes with real code examples. Master when to use each, best practices, and common pitfalls. Start coding smarter today. If you have ever sat in a technical interview or stared at a design decision in Visual Studio, you have hit this question: C# interface vs abstract class — which one should you use? It is one of the most searched C# topics for a reason. Both let you define contracts and share behavior, both power polymorphism, and both look deceptively similar at first glance. But choosing the wrong one leads to rigid, hard-to-maintain code. In this complete guide, we will break down the real difference between interfaces and abstract classes in C#, show runnable code examples, cover modern C# features like default interface methods, and give you a clear decision framework. Whether you are a beginner learning C# OOP concepts or a senior engineer refining your architecture, this article will make the choice obvious. What Is an Interface in ...