This guide explains how to add and modify HTTP headers in ASP.NET Core using custom middleware. Covers dynamic header injection, security best practices, CORS configuration, and middleware pipeline ordering for robust API responses.
TL;DR Avoid repetitive response handling in ASP.NET Core controllers by using helper methods or result wrapper patterns. Helper methods reduce boilerplate for common responses like BadRequest, NotFound, and Ok. The result wrapper pattern centralizes success and error handling, making controllers cleaner and responses consistent. Keep business logic in services and HTTP response logic in controllers for better separation of concerns. Use extension methods and middleware for standardized error handling and global exception management. Consistent response patterns improve API documentation and client experience. Minimal performance impact; benefits in maintainability and clarity far outweigh the overhead. We’ve all been there. You’re building an API and you find yourself writing the same code over and over again: ...