向ASP.NET MVC 5.0控制器方法添加參數導致JQuery數據表Ajax調用掛起

Question

與標題中的內容完全相同。 由於某種原因，將我的控制器方法更改為接受參數會導致我對此方法的DataTable ajax調用失敗。

功能簽名

[AcceptVerbs("POST")]
public JsonResult LoadPayoffAgingGrid(/*string SearchText, DateTime StartDate, DateTime EndDate*/)

DataTable調用：

function LoadPayoffAgingReportGrid() {

    var wsUrl = '@Url.Action("LoadPayoffAgingGrid", "Report")';
    var dtStart = $('#dtStart').val();
    var dtEnd = $('#dtEnd').val();
    var sSearch = $('.dataTables_filter input').val();

    oTableLoansView = $('#PayoffAginggridtable').dataTable({
        "bServerSide": true,
        "sAjaxSource": wsUrl,
        "iDisplayLength": 50,

        "bProcessing": true,
        "bDestroy": true,
        "sDom": sDomStandard,
        "bJQueryUI": true,
        "error": function (jqXHR, textStatus, errorThrown) {
            alert(errorThrown);
        },
        "sServerMethod": "POST",
        "sPaginationType": "full_numbers",
        "fnServerParams": function (aoData) {
            aoData.push({ "name": "sDateStart", "value": dtStart });
            aoData.push({ "name": "sDateEnd", "value": dtEnd });
            //aoData.push({ "name": "sSearch", "value": sSearch });
        },
        "bAutoWidth": false,
        "aoColumns": [
                { "sName": "BorrName", "bSortable": true, "sClass": "alignleft hidden-xs" },
                { "sName": "LoanNumber", "bSortable": true, "sClass": "alignleft" },
                { "sName": "SubdivName", "bSortable": true, "sClass": "alignleft hidden-xs" },
                { "sName": "LotNum", "bSortable": true, "sClass": "pointer hidden-xs" },
                { "sName": "OpenDtAge", "bSortable": true, "sClass": "alignright" },
                { "sName": "AgeGroup", "bSortable": true, "sClass": "alignright hidden-xs" },
                { "sName": "PaidOffDt", "bSortable": true, "sClass": "alignright" },
                { "sName": "CommitmentAmt", "bSortable": true, "sClass": "alignright" },

        ],
        "aaSorting": [[1, 'asc']]
    });

}

誰能解釋導致MVC和Jquery數據表如此交互的原因？ 我以為這是AJAX的一個方面，我不太了解。

Answer 1

如果添加非空參數，則需要在請求中包含它們

DateTime StartDate和DateTime EndDate是必需的，並且您的請求似乎正在發送sDateStart和sDateEnd ，由於參數名稱不匹配，這將引發錯誤

Answer 2

我發現問題在於DateTime和null之間沒有隱式轉換。 其他函數可以很好地工作，因為它們缺少DateTime類型的參數。 解決方案是使這些參數可為空，如下所示：

[AcceptVerbs("POST")]
public JsonResult LoadPayoffAgingGrid(string SearchText, DateTime? StartDate, DateTime? EndDate)