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What is the difference between IActionResult and ActionResult<T>?
Updated Apr 28, 2026
Short answer
IActionResult is non-generic; ActionResult<T> includes type safety.
Deep explanation
IActionResult allows returning different result types, while ActionResult<T> provides compile-time type safety and simplifies API responses.
Real-world example
Returning typed API responses.
Common mistakes
- Overusing IActionResult without type safety.
Follow-up questions
- Why use ActionResult<T>?
- When use IActionResult?