Top Mistakes 💻Developers Make in C# and ASP.NET (And How to Avoid Them)

When developing applications in C# and ASP.NET, even experienced developers can stumble upon common pitfalls that can affect the performance, security, and scalability of their projects. From neglecting error handling to overusing synchronous programming, these small mistakes can add up, causing unexpected bugs and making maintenance harder in the long run.

Understanding these common mistakes and how to avoid them is essential for building robust, efficient applications that meet user expectations. In this article, we’ll explore the top mistakes developers make in C# and ASP.NET projects, with real-world examples and practical solutions to help you sidestep these blunders in your own code. Whether you’re a seasoned developer or just starting out, this guide will help you elevate your C# and ASP.NET skills to the next level. Let’s dive in and set your projects up for success!

When developing in C# and ASP.NET, there are several common mistakes that developers should avoid to ensure quality, performance, and maintainability of their web applications.

Here’s a list of common blunders and how to avoid them:

1. Neglecting Error Handling

• Blunder: Failing to properly handle exceptions and errors, resulting in crashes or poor user experiences.
• Solution: Implement global error handling (e.g., try-catch blocks, Exception Filters, custom error pages). Use logging frameworks like Serilog or NLog to capture and log exceptions for debugging.

2. Ignoring Asynchronous Programming

• Blunder: Using synchronous methods for I/O-bound operations like database calls or API requests, leading to performance bottlenecks.
• Solution: Use asynchronous programming (async/await) to improve scalability and prevent blocking threads. For example, use Task-based APIs in Entity Framework Core.