jquery ajax 调用 Controller 正在发布空字符串

Question

我将车辆的 id 从 jquery ajax post 发布到 Controller 。Ajax 调用正在调用 Controller 方法，但该字符串始终为空。我在网上搜索了很多，但任何解决方案都不起作用。id 在 View 中具有值，但为空在 Controller 中。请帮助我。

这是我的代码: 查看

          <script type="text/javascript">
           function DeleteVehicle(id) {
          alert("working");
          if (confirm("Do you want to delete vehicle: " + id)) {
      //  var requestData = { 'vehicleId': vid }
        var dataPost={'id':id}
        $.ajax({



            url: '@Url.Action("DeleteVehicle", "Vehicle")',
            type: 'POST',
            data: dataPost,
            success: function (data) {
                alert("Success, sent data to controller");
            },
            error: function (data) {
                    alert("Error: " + data.responseText);
                }

        });
    }
}

$(function () {//when the document is ready
    $("#Delete").click(DeleteVehicle);
});

Controller

        public ActionResult DeleteVehicle(string id)
        {

            //code
               return Json(id, JsonRequestBehavior.AllowGet);
       }

Answer 1

您是否在操作方法上添加了 httppost 属性，如下所示？

[httpPost]
 public ActionResult DeleteVehicle(string id)
        {

            //code
               return Json(id, JsonRequestBehavior.AllowGet);
       }

在 jquery 中

  $(document).ready(function() {
        $("#Delete").on("click",  function(){
       var id = $(this).).attr("id"); ////fetch id wherever you are fetching
       alert("working");
              if (confirm("Do you want to delete vehicle: " + id)) {
          //  var requestData = { 'vehicleId': vid }
            var dataPost={'id':id}
            $.ajax({



                url: '@Url.Action("DeleteVehicle", "Vehicle")',
                type: 'POST',
                data: dataPost,
                success: function (data) {
                    alert("Success, sent data to controller");
                },
                error: function (data) {
                        alert("Error: " + data.responseText);
                    }

            });
        }


    });

有关更多信息，请查看此内容

MVC Deleting record using Javascript pop up