How to parse POST request with dynamic data in WEB API?

Question

API

Good afternoon.
In my view, the script generates an unknown amount of data in advance, and then sends them with a post request. I found an article where it says that in the class you can make a Dictionary dictionary, and send data using []
So I did:

public Dictionary<string, object> Column { get; set; }

The script sends data like:

Column%5BP5%5D=&Column%5BP6%5D=71&Column%5BP7%5D=100%25+-+%D1%85%D0%BB%D0%BE%D0%BF%D0%BE%D0%BA&Column%5BP8 %5D=&Column%5BP9%5D=&Column%5BP10%5D=&

and then in the controller:

public async Task<ActionResult> EditAModel(ModelView data)
        {
                // обработка
        }

everything works well I
wanted to do the same but in ApiController. And the problems started. The code is the same, but data is no longer written to this dictionary... It's impossible to get through Request, because QueryString is always empty...
It turned out to get a string like this:

public async Task<IHttpActionResult> EditModelList()
        {
            string result = await Request.Content.ReadAsStringAsync();
            var data = JsonConvert.DeserializeObject<ModelView>(result); // Не парсит, выдает ошибку
            return Ok();
        }

But it fails to parse.
In a regular controller, everything went smoothly, but here ...
Maybe I didn’t finish reading something and it’s done differently in Api? How to be? What to do?

Answer 1

What error does it give?

Answer 2

So, you are not getting JSON, how are you going to parse it with JsonConvert?
Here result is a set of keys and values, not a json object.

Answer 3

urlencoded string in post