数据表警告：表 id=DimStatus - 初始化数据表时，第 0 行第 0 列请求未知参数“代码”

Question

I want to show my data in datatable but I get the above error. My Table Property:

 [Table("DimStatus", Schema = "dmg")]
  public class PolicyState
   {
      [Key]
      public int Code { get; set; }
      public string Title { get; set; }
   }

My Api: [Route("api/[controller]/[action]")] [ApiController] public class ReportController: Controller { private ICommonServices _CommonService;

    public ReportController(ICommonServices CommonService)
    {
        _CommonService = CommonService;

    }
     //  GET
    public IActionResult Index()
    {
        return View();
    }


    [HttpPost]
    public IActionResult GetPolicyState()
    {
        try
        {
            var draw = Request.Form["draw"].FirstOrDefault();
            var start = Request.Form["start"].FirstOrDefault();
            var length = Request.Form["length"].FirstOrDefault();
            var sortColumn = Request.Form["columns[" + Request.Form["order[0] 
                                         [column]"].FirstOrDefault() +
                                          "][name]"].FirstOrDefault();
            var sortColumnDirection = Request.Form["order[0][dir]"].FirstOrDefault();
            var searchValue = Request.Form["search[value]"].FirstOrDefault();
            int pageSize = length != null ? Convert.ToInt32(length) : 0;
            int skip = start != null ? Convert.ToInt32(start) : 0;
            int recordsTotal = 0;
             var PolicyData = (from tempcustomer in _CommonService.GetPolicyState() select tempcustomer);
            //var PolicyData = _CommonService.GetPolicyState();

            if (!(string.IsNullOrEmpty(sortColumn) && string.IsNullOrEmpty(sortColumnDirection)))
            {
                PolicyData = PolicyData.OrderBy(sortColumn + " " + sortColumnDirection);
            }

            if (!string.IsNullOrEmpty(searchValue))
            {
                PolicyData = PolicyData.Where(m => m.Title.Contains(searchValue));

            }
            recordsTotal = PolicyData.Count();
            var data = PolicyData.Skip(skip).Take(pageSize).ToList();
            var jsonData = new
            {
                draw = draw,
                recordsFiltered = recordsTotal,
                recordsTotal = recordsTotal,
                data = data
            };

            var testd = jsonData;
            return Ok(jsonData);
        }
        catch (Exception ex)
        {
            throw;
        }
    }
}

and last my index.cshtml:

    <link rel="stylesheet" type="text/css" 
    href="https://cdn.datatables.net/1.11.3/css/jquery.dataTables.css">

<div class="container">
<br />
<div style="width:90%; margin:0 auto;">
    <table id="DimStatus" class="table table-striped table-bordered dt-responsive nowrap"
           width="100%" cellspacing="0">
        <thead>
            <tr>
                <th>Code</th>
                <th>Title</th>
                <th>asdf</th>

               </tr>
           </thead>
       </table>
    </div>
</div>
 @section Scripts
  {
  <script type="text/javascript" charset="utf8" 
 src="https://cdn.datatables.net/1.11.3/js/jquery.dataTables.js"></script>
  <script>
    $(document).ready(function () {
            dataTable = $('#DimStatus').dataTable({
            serverSide: true,
            processing: true,
            //searchDelay: 500,
            pageLength: 10,
            infoFiltered: true,
            orderMulti: false,
            "ajax": {
                "url": "/api/Report/GetPolicyState",
                "type": "POST",
                "datatype": "json"
            },

            "columns": [
                { "data": "Code", "name": "Code", "autoWidth": true },
                { "data": "Title", "name": "Title", "autoWidth": true },
                {
                    "render": function (data, row) {
                        return "<a href='#' class='btn btn-danger' onclick=DeleteCustomer('" + 
               row.Code + "'); >Details</a>";
                    }

                },

                ]
        });
    });

would if anybody know the issue help me solve it. thank you in advanced.

Answer 1

Your error clearly states that your returning data does not have any property name "Code". Make sure that the data structure your are returning contains property name "Code" as you are processing on PolicyData class and not PolicyState class that you have showed in the sample code.