What is Exception Filter in ASP.NET Web API?
Updated Apr 28, 2026
Short answer
Exception filters handle unhandled exceptions globally.
Deep explanation
Exception filters catch errors thrown during request processing and allow centralized error handling and consistent responses.
Real-world example
Returning structured error responses for APIs.
Common mistakes
- Exposing stack traces in production.
Follow-up questions
- What is global exception handling?
- Why exception filter?