juniorASP.NET
What are Controllers in ASP.NET Core?
Updated Apr 28, 2026
Short answer
Controllers handle incoming HTTP requests and return responses.
Deep explanation
Controllers contain action methods that process requests and return results like JSON or views.
Real-world example
Handling API endpoints or web pages.
Common mistakes
- Putting business logic in controllers.
Follow-up questions
- What is IActionResult?
- Why controllers?