Understanding Access Modifiers in C# Access modifiers are one of the fundamental building blocks of object-oriented programming in C#. They help you control the visibility and accessibility of your types and members, which is essential for writing secure and maintainable code. I’ve found that understanding access modifiers thoroughly can significantly improve your code architecture and prevent many common bugs related to inappropriate access to class members. Core Access Modifiers C# provides four primary access modifiers that you’ll use regularly: ...

Introduction Ever stared at a massive class file with hundreds of lines of code and thought, “What is this thing even supposed to do?” I sure have. That confusion usually points to problems with cohesion and coupling, two concepts that might sound academic but actually make the difference between code you want to work with and code you want to run away from. Let’s talk about these two fundamental ideas that can transform your code from a tangled mess into something you’re actually proud of. ...

Constructor Chaining in C# Ever written the same initialization code in multiple constructors? Constructor chaining is a neat trick in C# that lets you call one constructor from another in the same class. It’s a simple way to avoid repeating yourself and keep your initialization logic in one place. What’s Constructor Chaining All About? When you’re building a class in C#, you often need different ways to create objects. Maybe sometimes you have all the details, other times just the essential ones. ...

Introduction URL routing is a fundamental part of ASP.NET Core applications, determining how incoming requests are mapped to controller actions. While the framework provides numerous built-in route constraints like int, bool, and guid, there are situations where you need more sophisticated validation rules for your URL parameters. This is where custom route constraints become invaluable. In this guide, we’ll explore how to create and implement custom route constraints in ASP.NET Core using the IRouteConstraint interface. By the end, you’ll understand how to validate URL parameters with complex business rules specific to your application. ...

Taming Your Data with C# Annotations Have you ever found yourself writing the same validation code over and over? You know the drill, checking if a field is required, validating email formats, confirming passwords match… it gets repetitive fast. That’s where data annotations come to the rescue! Think of data annotations as sticky notes you attach to your C# properties. These little attributes tell frameworks like ASP.NET Core and Entity Framework how to treat your data without you writing tons of validation logic. ...

Introduction If you’ve been working with C# for any length of time, you’ve probably needed to store data as key-value pairs. The two main contenders for this job are Dictionary<TKey, TValue> and HashTable. They both do similar things, but there are some crucial differences that might make you choose one over the other. In this post, I’ll walk you through both options so you can make the right choice for your project. Trust me, this decision matters more than you might think! ...

Introduction If you’ve ever been in a job interview for a software developer position, chances are you’ve been asked to explain the difference between DIP, DI, and IoC. I know I have, and the first time I was asked, I definitely stumbled through my answer! These three terms, Dependency Inversion Principle, Dependency Injection, and Inversion of Control, sound awfully similar and are often used interchangeably (incorrectly) by developers. But they’re actually distinct concepts that play different roles in helping us write better code. ...

Introduction If you’ve been coding for a while, you’ve probably heard of SOLID. It’s a set of five design principles that Robert C. Martin (better known as “Uncle Bob”) came up with back in the early 2000s. Since then, these ideas have become pretty much essential knowledge for anyone writing object-oriented code. But SOLID isn’t just another tech buzzword to memorize for interviews. These are practical ideas that actually help you write better code. I’ve found that following these principles helps me avoid creating those messy, brittle codebases that become a nightmare to change later on. ...

ASP.NET Core is a modern web development framework that provides a variety of built-in security features to help prevent attacks on web application. Here are a few ways we can use ASP.NET Core to prevent attacks: Introduction In today’s threat landscape, web application security is no longer optional, it’s essential. ASP.NET Core provides a robust security framework with built-in features to defend against common attack vectors. This guide explores practical implementations of these security measures to protect your applications effectively. ...

Introduction If you’ve spent any time building C# applications, you’ve probably run into situations where you need to decide whether your objects should be changeable or locked down after creation. This choice between mutability and immutability isn’t just academic, it can significantly impact how your code behaves, how easy it is to debug, and even how it performs. In this post, I’ll walk you through both approaches and help you figure out which one makes sense for your specific coding challenges. ...