juniorASP.NET Web API
What is ApiController attribute?
Updated Apr 28, 2026
Short answer
It enables API-specific behaviors in controllers.
Deep explanation
ApiController simplifies model validation, binding, and response formatting automatically.
Real-world example
Automatic 400 response for invalid models.
Common mistakes
- Not using it in modern APIs.
Follow-up questions
- What is ControllerBase?
- Why ApiController?