Get-request sends null in web api

Question

I have an action for a GET-reqeust:

[HttpGet]
public string Answer([FromBody]string value)
{
    CookieHeaderValue cookie = Request.Headers.GetCookies("user").FirstOrDefault();
    game.LogUserAnswer(cookie["user"].Value, value);
    return String.Format("<strong>{0}</strong>: {1} <br>", cookie["user"].Value, game.UserGuess(value));
}

When I'm trying to pass any data I've always got null. I invoke the action with ajax-call:

$('#btnAnswer').click(function () {
    var value = $('#Answer').val();
    $.ajax({
        type: "GET",
        dataType: "json",
        url: uri + '/' + 'Answer' + '/' + value,
        data: { '': value },
        success: function (data) {
            $('#resultsBox').append('<strong>' + data + '</strong><br>');
        },
        error: function (error) {
            jsonValue = jQuery.parseJSON(error.responseText);
        }
    });
});

In the Fiddler the url is next: GET /api/values/Answer/132312?=132312 HTTP/1.1 I tried to send another request: GET /api/values/Answer/132312 HTTP/1.1 but still in my action value is null.

Also I've changed public string Answer(string value) (without FromBody), in this case application can't find needful HTTP.

Could you please tell, what I'm missing?

*Update 1 * var uri = 'api/values';

config.Routes.MapHttpRoute(
    name: "apianswer",
    routeTemplate: "Home/api/values/answer/{id}",
    defaults: new { action = "Answer", id = RouteParameter.Optional }
);

Are you getting a 404 ? What if you open the browser dev tools -> network tab and copy the URL and try that directly on a browser ? — Shyju

Hamid Pourjam Hamid Pourjam · Accepted Answer · 2015-11-14T15:37:02

Get requests does not have body! You should send your parameter as part of your route

[HttpGet]
[Route("Home/api/values/answer/{value}"]
public string Answer(string value = null //in case you want to call answer without any value provided)
{...}

$.ajax({
    type: "GET",
    url: uri + '/' + 'Answer' + '/' + value,
    ...
});

or as a query string

[HttpGet]
public string Answer(string value)
{...}

$.ajax({
    type: "GET",
    url: uri + '/' + 'Answer',
    data: {value: value}
    ...
});

Get-request sends null in web api

1 Answers