Hello,

I am upgrading my legacy web API to core. I was using IHttpActionResult in my controller in my legacy code. I wonder if I can use it in core 6 web API?

[HttpPost]  
        [Route("purchase")]  
        public async Task<IHttpActionResult> PurchaseGame(RequestDto game)  
            if (!ModelState.IsValid) return BadRequest(ModelState);  
            HttpResponseMessage gameConfirmResponse;  
            if (game.ProductCode is "132" or "133")  
                //Call Razer  
                gameConfirmResponse = await _services.RazerPurchase(game);  
                //Call Services  
                gameConfirmResponse = await _services.EzpinPurchase(game);  
            //If there are no games  
            if (gameConfirmResponse == null)  
                return new ResponseMessageResult(  
                    Request.CreateErrorResponse((HttpStatusCode)222, new HttpError("No Results Found")));  
            if (gameConfirmResponse.Content == null)  
                return new ResponseMessageResult(  
                    Request.CreateErrorResponse((HttpStatusCode)222, new HttpError("No Results Found")));  
            switch (gameConfirmResponse.StatusCode)  
                case HttpStatusCode.NotFound:  
                        return NotFound();  
                case HttpStatusCode.InternalServerError:  
                        return InternalServerError();  
                case HttpStatusCode.OK:  
                        var responseStream = await gameConfirmResponse.Content.ReadAsStringAsync();  
                        var resultResponse = JsonConvert.DeserializeObject<GameConfirmResponse>(responseStream);  
                        if (resultResponse.Coupons == null)  
                            return new ResponseMessageResult(  
                                Request.CreateErrorResponse((HttpStatusCode)222,  
                                    new HttpError("No Coupons Available for this Game")));  
                        var resultDto = _mapper.Map<GameConfirmResponse, GameConfirmResponseDto>(resultResponse);  
                        return Ok(resultDto);  
                case HttpStatusCode.Unauthorized:  
                        return Unauthorized();  
                case HttpStatusCode.RequestTimeout:  
                        return InternalServerError();  
            gameConfirmResponse.Dispose();  
            return Ok(gameConfirmResponse);  
						
Hi @Cenk  ,    
In asp.net core application, you can use the IActionResult to replace the IHttpActionResult:    
     public async Task<IActionResult> PurchaseGame(RequestDto game)  
Then, you can also return BadRequest(), Ok() and Unauthorized().     
For the InternalServerError error, you can return a StatusCode, like this:    
    return StatusCode(StatusCodes.Status500InternalServerError, "Error message");  
More detail information, see Controller action return types in ASP.NET Core web API.    
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Dillion