How I can return json object in api controller?

Omar Kh

5y8.7kLearn iOS Programming

im using WebApi to make a webservice

as follow:

using RestSharp;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using Newtonsoft.Json;
namespace test.Controllers
{
public class ValuesController : ApiController
{
public class WebAgent
{
public string Agent_no { get; set; }
public string Agent_Name { get; set; }
}
public string GetAgent([FromBody] string a_body)
{
dynamic stuff = JsonConvert.DeserializeObject(a_body);
string agent = stuff.agent_no.ToString();
string name = stuff.agent_name.ToString();
try
{
var test = new WebAgent()
{
Agent_no = agent,
Agent_Name = name
};
JsonSerializerSettings settings = new JsonSerializerSettings
{
NullValueHandling = NullValueHandling.Ignore,
Formatting = Formatting.Indented
};
var result= JsonConvert.SerializeObject(test,settings);
return result;
}
catch (WebException e)
{
var message = e.Message;
using (var reader = new StreamReader(e.Response.GetResponseStream()))
{
var content = reader.ReadToEnd();
return content.ToString();
}
}
finally
{
}
}
}
}

and everything just working fine

but when i try to call my webapi service from postman i got the following response

"{\r\n \"Agent_no\": \"122331\",\r\n \"Agent_Name\": \"sabatini\"\r\n}"

instead of:

"{"Agent_no": "122331","Agent_Name": "sabatini"}"

i have tried to add

config.Formatters.JsonFormatter.S‌erializerSettings = new JsonSerializerSettings
{
NullValueHandling = NullValueHandling.Ignore,
Formatting = Formatting.Indented
};

to the WebApiConfig.cs but still get the same response !

i need help !

thanks

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sachin Singh5y ago
You don't need to do anything special , The web API has 4 different formatters, and it returns the result depending upon the Media type defined in Accept Header by the client.
So even if you return list of webagent from controller the client will get Json/XML back, depending upon what they specify in the accept header while issuing the request.
Please go through these two topics to make things clear.

1.Content-Negotiation :- https://www.sharpencode.com/article/WebApi/content-negotiation
2.Media Type Fo rmatters :- https://www.sharpencode.com/article/WebApi/media-type-formatters
0
Jignesh Kumar5y ago
Hi,

Please use this link for,

https://forums.asp.net/t/2143024.aspx?return+JsonResult+from+WebAPI
public JsonResult GetAgent([FromBody] string a_body)
        {
            dynamic stuff = JsonConvert.DeserializeObject(a_body);
            string agent = stuff.agent_no.ToString();
            string name = stuff.agent_name.ToString();
            try
            {
                var test = new WebAgent()
                {
                    Agent_no = agent,
                    Agent_Name = name
                };

                return Json(test);

            }
            catch (WebException e)
            {
                var message = e.Message;
                using (var reader = new StreamReader(e.Response.GetResponseStream()))
                {
                    var content = reader.ReadToEnd();
                    return content.ToString();
                }
            }
            finally
            {

            }
        }
0