Answer
Model binding maps HTTP data to method parameters.
[FromBody]binds JSON/XML[FromQuery]binds query parameters[FromRoute]binds URL segments
Validation uses DataAnnotations and ModelState.IsValid.
Quick Answer
Model binding automatically maps HTTP request data (route params, query string, body, headers, form) to action method parameters. [FromBody] binds JSON request body. [FromQuery] binds query string. [FromRoute] binds route parameters. [FromHeader] binds headers. [ApiController] enables automatic validation - if ModelState is invalid, it returns 400 Bad Request without needing to check manually.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ