CODEWITHSUNDEEP
asp.netasp.net-mvc-4asp.net-web-api
Andres
Andres

Reputation: 95

Parameters are null

I have seen many similar questions and I have tried all the possible answers but my problem is still the same. Basically, I have the following ajax call.

var obj = {
    Duration: 12000,
    Errors: 2
};
var post = $.ajax({
    url: APIUrl,
    data: JSON.stringify(obj),
    type: "POST",
    cache: false,
    dataType: 'json',
    contentType: 'application/json, charset=utf-8'
});

This is my View Model.

public class TargetBasedViewModel
{
    public int Duration{ get; set; }
    public int Errors{ get; set; }
}

And here is my controller.

    [HttpPost]
    public HttpResponseMessage Post(TargetBasedViewModel test)
    {
        return new HttpResponseMessage(HttpStatusCode.OK);
    }

The problem is that the parameter keeps coming as null. I have used Fiddler to examine the request and it looks fine, all the attributes are there and I can even examine the JSON object and make sure that my values are actually being sent to the server. I have read many articles and even tried to add [ModelBinder] and [FromBody] to the parameter, but still no luck. I have also tried to add this to my Application_Start()

GlobalConfiguration.Configuration.Formatters.JsonFormatter.SerializerSettings = new JsonSerializerSettings();

Any ideas what I might be doing wrong?

Upvotes: 2

Views: 231

Answers (2)

Ann L.
Ann L.

Reputation: 13975

You might look at this post and the accepted answer. It suggests that:

  1. In order to POST, you need to set things up in the form of a FORM;
  2. You need to do away with your dataType and contentType parameters.

I THINK I'VE GOT IT! Your contentType parameter:

It needs to be "application/json;charset=utf-8"

You've got a COMMA after the "json".

Upvotes: 1

Youssef Moussaoui
Youssef Moussaoui

Reputation: 12405

Check the ModelState property on your controller. Deserialization errors are recorded there. You'll likely find out why deserialization failed.

Upvotes: 0

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