IActionResult
IActionResult is an ASP.NET Core MVC interface implemented by objects that represent the result of processing an HTTP request.
ASP.NET Core in Action, 3e
IActionResult is an ASP.NET Core interface representing instructions for producing an HTTP response from request-handling code.
- How it is used
- Directs response generation from Razor Page handlers and provides response choices for MVC and web API actions.
- How deep it goes
- Explains when results execute, why they separate decisions from generation, and what common result types return; stops short of implementing a custom result.
- Examples
- Uses HTML, redirect, file, and status-code results, plus an indexed web API action that returns data or NotFound().
- What you can do after
- Apply it via ASP.NET Core Razor Page handlers or controller actions to choose an appropriate response and test that choice separately.
Read how ASP.NET Core in Action, 3e explains IActionResult →
Pro ASP.NET Core 7, Tenth Edition
IActionResult is the ASP.NET Core MVC interface implemented by objects that represent the result of processing an HTTP request.
- How it is used
- Lets ASP.NET Core MVC controller actions select HTTP responses without writing directly to HttpResponse.
- How deep it goes
- Explains result-producing controller methods and demonstrates their request behavior; does not descend into IActionResult implementation internals.
- Examples
- Uses product GET and POST requests, PowerShell responses, redirects, and an HTML action returning a product view model.
- What you can do after
- Apply it via ASP.NET Core MVC to return status-code, redirect, or view results from controller actions.
Read how Pro ASP.NET Core 7, Tenth Edition explains IActionResult →
Related concepts
- result resourceimplemented by · An action result is an abstraction representing the outcome or response produced by an API action, including a typed value or HTTP response.
- result filterused by · A result filter is an ASP.NET Core MVC filter that runs before and after action-result execution and can modify result processing or the response.
- handlerproduced by · A handler is a callable or software component that processes an event, request, message, or other input and performs associated processing.
- IResultcontrasts with · IResult is an ASP.NET Core interface representing the result produced by executing an HTTP endpoint.
- PageResultincludes · PageResult is an ASP.NET Core action result that renders the associated Razor Page as HTML and returns a successful response.
- ViewResultincludes · ViewResult is an MVC action-result type that represents rendering a view with an optional name and model.
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