Json type not recognized

Question

Why can't I return Json. It is underlined and does not exist in the current context.

using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using System.Web.Http;
using System.Web.Http.Results;
using System.Web.Mvc;

//class and namespace detail removed to keep this post short

    public async Task<IHttpActionResult> Post(string url, StringContent data, Dictionary<string, string> headers)
    {
        using (var client = new HttpClient())
        {
                var response = await client.PostAsync(url, data);
                var result = await response.Content.ReadAsStringAsync();

                //the line below is the error******** 
                return Json(new { HttpStatusCode = HttpStatusCode.OK });
        }
    }

I also tried install-package System.Json and this didn't help.

I'm aware there are probably other things wrong, the code has never worked as I started it an hour ago but I can't understand why Json is not recognized

This is from within a class library (if it matters)

@PeterBons, I'm sorry. No, I just removed that to keep the post short. Updated to make it clear. Sorry — MyDaftQuestions
– MyDaftQuestions, Commented Sep 2, 2017 at 13:31

Nkosi · Accepted Answer · 2017-09-02 13:44:16Z

2

That method is a helper method of Web API's ApiController and should be called within a ApiController derived class.

public class MyApiController : System.Web.Http.ApiController {

    public async Task<IHttpActionResult> Post(string url, StringContent data, Dictionary<string, string> headers) {
        using (var client = new HttpClient()) {
            var response = await client.PostAsync(url, data);
            var result = await response.Content.ReadAsStringAsync();

            return Json(new { HttpStatusCode = HttpStatusCode.OK });
        }
    }    
}

The same exists for MVC Controller derived classes as well

public class MyController : Controller {

    public async Task<ActionResult> Post(string url, StringContent data, Dictionary<string, string> headers) {
        using (var client = new HttpClient()) {
            var response = await client.PostAsync(url, data);
            var result = await response.Content.ReadAsStringAsync();

            return Json(new { HttpStatusCode = HttpStatusCode.OK }, JsonRequestBehavior.AllowGet);
        }
    }    
}

edited Sep 2, 2017 at 13:44

answered Sep 2, 2017 at 13:37

Nkosi

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2 Comments

MyDaftQuestions Over a year ago

Ah, and I guess I could return Content if I inherit from Controller then?

Nkosi Over a year ago

@MyDaftQuestions Controller has a Json helper method as well. You should probably update your question to clarify exactly what you are doing. The assumption was web API because of the types used in your example.

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