multi dimensional array or dictionary binding doesn't work

[mhamri]

I was able to use following code in asp.net mvc but it's not working in asp.net core and i can't see any other solution rather than writing a custom model binder. i tried whatever solution was out there on the internet but look like it's not working properly.
I am using asp.net core 2.0

ScoresViewModel.cs

public class ScoresViewModel
{
    public List<List<int>> Inputs { get; set; }
}

index.cshtml

<from id="question" >
   <input type="text" name="Inputs[0][0]" value="10" />
   <input type="text" name="Inputs[0][1]" value="11" />
   <button type="submit" id="submit" value="submit"/>
</from>

$("#submit").submit(function () {
    var getData = function () {
        return $("#question").serialize();
    };
    $.ajax({
        url: "/Api/ScoreCalculator/Calculate",
        method: "POST",
        data: getData(),
        success: function (response) {
           $("#panel-report").html(response);
        },
        error: function (errResponse) {
            debugger;
        }
    });
    return false;
});

I can see in my browser that the request is post and mime type is x-www-form-urlencode

"postData": {
   "mimeType": "application/x-www-form-urlencoded",
   "text": "Inputs[0][0]=10&Inputs[0][0]=11",
   "params": [
       {
       "name": "Inputs[0][0]",
       "value": "10"
       },
       {
       "name": "Inputs[0][1]",
       "value": "11"
       }
   ]
}

and in the controller i am getting the content

public class ScoreCalculatorController{

     public IActionResult Calculate(ScoresViewModel scores){
             return OK(scores)
     }
}

i tried [FromBody] and [FromForm] but none is working, also if i just try to model bind a string it works fine so i believe i don't need to use [FromBody] and [FromForm] in here.

this code was working fine in mvc 5. look like asp.net core model binder is not supporting complex types correctly. any hint on this?

Expected behavvior
by passing Inputs[0][0] the model binder, bind the value to a multi diemnsional array (int[][], list<int[]>, list<list>) or dictionary (dictionary<int, list>, dictionary<int, int[]> , ...) based on the type.

why it should works in this way?

1. @Html.TextBoxFor(m => m.Inputs[0][0]) is generating <input data-val="true" data-val-required="The Int32 field is required." id="Inputs_0__0_" name="Inputs[0][0]" type="text" value="1"> so passing the Inputs[0][0] should bind back to the same model
2. single dimensional array works the same way. simply passing something like Inputs[0] will do the binding to public List<int> Inputs{get; set;}
3. aps.net mvc works in this way

actual behavior
ignoring the data

[Eilon]

This issue was moved to aspnet/Mvc#7187