Конвертировать Excel в JSON

Question

Я не могу преобразовать xlsx в JSON.

Я пытался таким образом:

var jsonString = string.Empty;
jsonString = JsonConvert.SerializeObject(dataList, Formatting.Indented);

      public ActionResult UploadFile()
        {
            try
            {
                var file = Request.Form.Files[0];
                string folderName = "Upload";
                string webRootPath = _hostingEnvironment.WebRootPath;
                string newPath = Path.Combine(webRootPath, folderName);
                if (!Directory.Exists(newPath))
                {
                    Directory.CreateDirectory(newPath);
                }
                if (file.Length > 0)
                {
                    string fileName = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
                    string fullPath = Path.Combine(newPath, fileName);
                    using (var stream = new FileStream(fullPath, FileMode.Create))
                    {
                        file.CopyTo(stream);
                    }



                    var workbook = new XLWorkbook(fullPath);

                    //Read the first Sheet from Excel file.

                    var workSheet = workbook.Worksheet(1);

                    var firstRowUsed = workSheet.FirstRowUsed();

                    var firstPossibleAddress = workSheet.Row(firstRowUsed.RowNumber()).FirstCell().Address;

                    var lastPossibleAddress = workSheet.LastCellUsed().Address;


                    // Get a range with the remainder of the worksheet data (the range used)

                    var range = workSheet.Range(firstPossibleAddress, lastPossibleAddress).AsRange(); //.RangeUsed();

                    // Treat the range as a table (to be able to use the column names)

                    var table = range.AsTable();


                    //Specify what are all the Columns you need to get from Excel

                    var dataList = new List<string[]>

                    {

                      table.DataRange.Rows()


                        .Select(tableRow =>
                          tableRow.Field("Condition").GetString())
                        .ToArray(),

                      table.DataRange.Rows()

                        .Select(tableRow => tableRow.Field("rules__field").GetString())

                        .ToArray(),
                       table.DataRange.Rows()

                        .Select(tableRow => tableRow.Field("rules__operator").GetString())

                        .ToArray(),
                        table.DataRange.Rows()

                        .Select(tableRow => tableRow.Field("rules__value").GetString())

                        .ToArray(),

                    };


                    var jsonString = string.Empty;
                    jsonString = JsonConvert.SerializeObject(dataList, Formatting.Indented);


                }

                return Json("Upload Successful.");

            }
            catch (Exception ex)
            {
                return Json("Upload Failed: " + ex.Message);
            }

        }
    }

Получено:

[
  [
      "and"
  ],
  [
      "Id"
  ],
  [
      "Contains"
  ],
  [
      "4000030000502"
  ]
]

Ожидаемый результат:

{
    "condition": "and",
    "rules": [
        { 
          "field": "Id", 
          "operator": "Contains", 
          "value": "4000030000502"
        }
    ]
}