Web Api Request.CreateResponse HttpResponseMessage no intellisense VS2012

Question

For some reason, Request.CreateResponse is now "red" in VS2012 and when I hover over the usage the IDE says

Cannot resolve symbol 'CreateResponse'

Here is the ApiController Class:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using System.Web.Http.Filters;
using GOCApi.Attributes;
using GOCApi.Models;
using GOCApi.Models.Abstract;
using AttributeRouting;
using AttributeRouting.Web.Http;

namespace GOCApi.Controllers
{
    [RoutePrefix("Courses")]
    public class CoursesController : ApiController
    {
        private ICoursesRepository _coursesRepository { get; set; }

        public CoursesController(ICoursesRepository coursesRepository)
        {
            _coursesRepository = coursesRepository;
        }

        [GET("{id}")]
        public HttpResponseMessage Get(int id)
        {
            var course = _coursesRepository.GetSingle(id);
            if (course == null)
            return Request.CreateResponse(HttpStatusCode.NotFound, "Invalid ID");
            return Request.CreateResponse(HttpStatusCode.OK, course);
        }
    }
}

Granted, the code does compile and works, it's just really annoying seeing all the "red" on my screen. Also, the intellisense doesn't work now when I type Request.CreateResponse. This also used to work, but I started developing other parts to my API and just came back to building controllers so I do not know what happened.

Any thoughts?

It happens a lot to me and the way it comes back is to close down VS and re-open it, annoyance that I have to live with, hope not for long. — von v., Apr 04 '13 at 16:00
Make sure the file build action property is set to "Compile" and not "Content". — StingyJack, Jul 15 '13 at 22:28

score 22 · Answer 1 · answered Sep 23 '13 at 14:46

22

You need to add a reference to System.Net.Http.Formatting.dll. The CreateResponse extension method is defined there.

answered Sep 23 '13 at 14:46

Rafael Romão

1,788
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10

iroel, it's probably because your controller is not deriving from ApiController. – cjones26 Sep 08 '14 at 13:05
4

You must reference the System.Net.Http.Formatting dll BUT the *using* is System.Net.Http. You need both. – Lukos Jun 04 '15 at 09:42
Note that you will need a Using statement as well after adding the reference. This solved my issue. – Rudy Scoggins Apr 24 '18 at 16:08

score 21 · Answer 2 · edited Jun 06 '13 at 19:33

21

Because this extension method lives in System.Net.Http, you just need to include it in your usings statements.

using System.Net.Http;

edited Jun 06 '13 at 19:33

Linus Caldwell

10,908
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answered Jun 06 '13 at 19:13

scidec

247
2
4

5

The OP did at line 5. Without it would not compile. – Linus Caldwell Jun 06 '13 at 19:34

score 9 · Answer 3 · edited Feb 05 '18 at 09:26

9

You can use

 HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.Gone)

instead of

 Request.CreateResponse(HttpStatusCode.Gone)

edited Feb 05 '18 at 09:26

Ashkan S

10,464
6
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answered Aug 13 '14 at 04:40

Diwakar Sharma

101
1
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1

I think there's something wrong with this implementation. You are creating a response based on default values. Where here: https://msdn.microsoft.com/en-us/library/hh969014(v=vs.118).aspx it says the generated response from the request will be created "wired up" to the request.. I have no idea what "wired up" means :) – Majid ALSarra Aug 19 '18 at 08:03
Thanks! This helped me in a project where the implementation is not in a controller. – SendETHToThisAddress Aug 18 '21 at 23:05

score 6 · Answer 4 · edited May 23 '17 at 11:54

This is because you have to do:

namespace GOCApi.Controllers
{
    [RoutePrefix("Courses")]
    public class CoursesController : ApiController
    {
        private ICoursesRepository _coursesRepository { get; set; }

        public CoursesController(ICoursesRepository coursesRepository)
        {
            _coursesRepository = coursesRepository;
        }

        [GET("{id}")]
        public HttpResponseMessage Get(int id)
        {
            var course = _coursesRepository.GetSingle(id);
            if (course == null){
               return this.Request.CreateResponse(HttpStatusCode.NotFound, "Invalid ID");
            }
            return this.Request.CreateResponse(HttpStatusCode.OK, course);
        }
    }
}

Note the this.
In my case the compiler now gets it. Saw the example here

This is actually quite weird, once I put down `this` it said I could remove it... — Jappie Kerk, Jan 19 '14 at 13:28
Base class originally was `Controller` in my auto created solution, once I changed it to `ApiController` suddenly the `CreateResponse` was found. — crthompson, May 14 '15 at 21:23

score 0 · Answer 5 · edited Oct 05 '16 at 12:05

0

Add a reference to System.Web.Http to the project. Then add

Using System.Web

to the top of the cs file.

edited Oct 05 '16 at 12:05

MeanGreen

3,098
5
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answered Oct 05 '16 at 11:19

mmcc

1

score -2 · Answer 6 · edited May 23 '17 at 12:34

-2

This a known issue with VB.NET and Request.CreateResponse.

There is a workaround: Missing request.CreateResponse in vb.net Webapi Projects

edited May 23 '17 at 12:34

Community

1
1

answered Jan 16 '14 at 14:36

Simcha Khabinsky

1,970
2
19
34

Web Api Request.CreateResponse HttpResponseMessage no intellisense VS2012

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