将 JavaScript 数组传递给 IEnumerable 会给出 null 值

我在 MVC 3 中将 Javascript 数组传递到控制器时遇到了很大的麻烦。我不断收到空值，感觉我已经尝试了传递数组的所有方法。下面是 JavaScript，相关的视图模型Questions和控制器签名。我将不胜感激任何帮助。我的 JavaScript 中没有出现任何错误，我想我一定错过了一些基本的东西。

的值id and response-id控制器已正确接收。

javascript

$("#form-submit-scores").submit(function () {

        var question = [],
        var item = [],

        $('.questionRow').each(function (index) {
            question[index] = new Array();
            var fullQuestionId = $(this).attr('id');
            var fullQuestionParts = fullQuestionId.split('-');
            question[index].QuestionId = fullQuestionParts[fullQuestionParts.length - 1];
            question[index].QuestionScore = $('.scoreBoard').val();
        });

        $('.itemRow').each(function (index) {
            item[index] = new Array();
            item[index].ItemId = $(this).attr('id');
            item[index].ItemScore = $('.scoreBoard').val();
        });

        var url = "/ctr/SaveResponse",
            data = {
                Id: $('#id').val(),
                ResponseId: $('#response-id').val(),
                Questions: question,
                Items : item
            },

        if (isSubmitScores) {
            url = "/ctr/SubmitResponse"
        }

        $.ajax({
            url: url,
            type: 'Post',
            data: data,
            traditional:true,
            datatype: "json",
            contentType: "application/json; charset=utf-8",
            success: function (result) {
                if (!result.Success) {

....
....
....

视图模型

public class SubmitResponseViewModel
    {
        public int Id { get; set; }
        public int ResponseId { get; set; }
        IEnumerable<SubmitResponseScoresQuestionViewModel> Questions {get;set;}
        IEnumerable<SubmitResponseScoresItemViewModel> Items { get; set; }
    }



public class SubmitResponseScoresQuestionViewModel
    {
        public int QuestionId { get; set; }
        public decimal? QuestionScore { get; set; }
    }

控制者签名

public JsonResult SubmitResponseScores(SubmitResponseScoresViewModel model)

正如我上面所说，我的模型现在包含正确的值Id and response-id但空值Questions and Items。我已经确认我的data正在 AJAX 调用中填充，因此我认为我没有为控制器提供适当格式的数据。

EDIT:1

Chrome JS 调试器：AJAX 数据对象

  JSON.stringify(data, null, 2)
"{
  "Id": "1027",
  "ResponseId": "26",
  "Questions": [
    {
      "QuestionId": "7",
      "QuestionScore": "0"
    },
    {
      "QuestionId": "2",
      "QuestionScore": "0"
    },
    {
      "QuestionId": "1",
      "QuestionScore": "0"
    }
  ],
  "Items": [
    {
      "ItemId": "434",
      "ItemScore": "0"
    }
  ]
}"

您想使用 JSON.stringify 将数组序列化为 JSON
https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/JSON/stringify https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/JSON/stringify

1）在Nuget中安装Json.net以包含JsonFilter符号

PM> Install-Package Newtonsoft.Json

2）在你的action方法上放置一个Json Filter注释

[JsonFilter(Param = "attributes", JsonDataType = typeof(AttributeViewModel[]))]
  JsonResult SubmitResponseScores(SubmitResponseScoresViewModel model)

3）在你的ajax调用中：

    data:  JSON.stringify(data),