How to use HttpRequestMessage.CreateResponse <HttpError> () in ASP.NET 5

Question

I have an empty web API project, as well as a complete MVC project created using VS2015. I notice that the HttpRequestMessage is in System.Net.Http , this is normal, but not for CreateResponse below:

This code is from my middleware exception log, which also returns formatted json from previous web API 2.

 var resp = request.CreateResponse<HttpError>(HttpStatusCode.InternalServerError, new HttpError("Internal Server Error. Reference: " + guid), config); 

I am trying to figure out a CreateResponse extension CreateResponse which is supposedly available in System.Net.Http.HttpRequestMessageExtensions , as well as the HttpError class. Both were previously in the Microsoft.AspNet.WebApi.Core package.

After looking at the ASP.NET 5 code, I believe that it is only available in Microsoft.AspNet.Mvc.WebApiCompatShim . However, it is not included in the draft MVC sample.

Questions:

What is the WebApiCompatShim package and can I use it safely in a project?

What is the correct path to CreateResponse from HttpRequestMessage ?

Update

This WebApiCompatShimWebSite shows that WebApiCompatShim is

to get Web API 2. * as behavior

So it seems just for the purpose of compatibility. I have to rebuild the code. Now I find that MVC does not have the function of message handlers, and it seems that ordinary middleware is the way to go.

Answer 1

If you add the Microsoft.AspNet.WebApi.Core NuGet package, you will get the extensions you are looking for.

link: https://www.nuget.org/packages/microsoft.aspnet.webapi.core/

Answer 2

This is an extension method of the HttpRequestMessage . You should reference the following DLL, which is included in the Microsoft.AspNet.WebApi.Core Nuget package:

 Nuget\packages\Microsoft.AspNet.WebApi.Core.5.2.3\lib\net45\System.Web.Http.dll 

This time you can see the CreateResponse :

 var response = request.CreateResponse(...) 

Answer 3

In accordance with:

https://docs.asp.net/en/latest/tutorials/first-web-api.html

You can achieve similar functionality by creating a new instance of ObjectResult (the status code can subsequently be changed by setting the StatusCode property).