Question

我想在我的视图中获取中心列表。这是我的代码：

ListExamens.cshtml：在控制器

<script type="text/javascript"> 
    function EditExamen(id) { 
     $.getJSON('/Parametrage/result?examenId=' + id), function (data) { 
      $.each(data, function (key, val) { 
       $('#IntituleM').text(val.name); 
      }); 
     }; 
    } 
</script> 

@foreach (var item in Model.Item1) 
{ 
    <tr> 
     <td>@Html.DisplayFor(modelItem => item.Intitule)</td> 
     <td>@Html.DisplayFor(modelItem => item.Direction.Description)</td> 
     <td>@Html.DisplayFor(modelItem => item.Datelimite)</td> 
     <td> 
      <a class="btn btn-custom btn-xs" href="javascript:EditExamen(@item.Id)" title="Editer"> 
       <i class="fa fa-edit"></i> 
      </a> 
      <a class="btn btn-custom btn-xs" href="javascript:DeleteAskToConfirm(@item.Id)" title="Supprimer"> 
       <i class="fa fa-trash-o"></i> 
      </a> 
     </td> 
    </tr> 
} 

功能：

public JsonResult result(string examenId) 
{ 
    List<CentreExamen> r= centreExamenService.GetAll().ToList(); 
    return Json(r, JsonRequestBehavior.AllowGet); 
} 

我使用Firebug调试JavaScript函数我得到这个错误：

没有异常的首选机会类型'System.InvalidOperationException异常'的产品dans System.Web.Extensions.dll 没有例外depremièrechance de类型'System.InvalidOperationException's'est produite dans System.Web.Mvc.dll 没有例外depremièrechance de type'System.InvalidOperationException's'est produite dans System.Web.Mvc.dll

---

这是我的javascript函数：

function EditExamen(id) { 

     $.getJSON("/Parametrage/result", {examenId:id}, function (data) { 


      $.each(data, function (i, item) { 
       $('#CentresM').val(item.id); => this is the list what i want to fill and it is in modal pop up 

      }); 
     }); 

     $('#editExamen').modal(); 

    } 
</script> 

这是我的弹出

<div id="editExamen" class="modal fade"> 
    <div class="modal-dialog"> 
     <div class="modal-content"> 
      <div class="modal-header"> 
       <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button> 
       <h4 class="modal-title">Modifier un Examen</h4> 
      </div> 
      <div class="modal-body"> 
       <form name="form-editExamen" id="form-editExamen" action="ModifierExamen" method="post" class="form-horizontal"> 
        <div class="form-group"> 
         @Html.Hidden("examenIdM") 
         <div class="col-md-3"> 
          <label>Intitulé :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.TextBoxFor(model => model.Item2.Intitule, new { id = "IntituleM", @class = "form-control" }) 
         </div> 
         <div class="col-md-3"> 
          <label>Lieu :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.DropDownList("DirectionsM", null, "Sélectionnez", new { @class = "form-control" }) 
         </div> 
        </div> 
        <div class="form-group"> 
         <div class="col-md-3"> 
          <label>Centre :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.ListBox("CentresM", (MultiSelectList)ViewBag.Centres) => this is my listbox 

         </div> 
         <div class="col-md-3"> 
          <label>Note éliminatoire :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.TextBoxFor(model => model.Item2.NoteEliminatoire, new { id = "NoteEliminatoireM", @class = "form-control" }) 
         </div> 
        </div> 
        <div class="form-group"> 
         <div class="col-md-3"> 
          <label>Moyenne de passage :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.TextBoxFor(model => model.Item2.MoyennePassage, new { id = "MoyennePassageM", @class = "form-control" }) 
         </div> 
         <div class="col-md-3"> 
          <label for="annee"> Année :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.DropDownList("AnneeM", null, new { @class = "form-control" }) 
         </div> 
        </div> 
        <div class="form-group"> 
         <div class="col-md-3"> 
          <label for="grade"> Grade :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.DropDownList("GradeM", null, "Sélectionnez", new { @class = "form-control" }) 
         </div> 
         <div class="col-md-3"> 
          <label for="grade"> Date limite de réception des candidatures :</label> 
         </div> 
         <div class="col-md-3"> 
          @Html.TextBoxFor(model => model.Item2.Datelimite, DateTime.Now.ToString("d"), new { id = "DatelimiteM", @class = "form-control datepicker" }) 
         </div> 

        </div> 
        <div class="modal-footer"> 
         <input type="submit" value="Modifier" class="btn btn-custom btn-lg" /> 
         <button type="button" class="btn btn-default" data-dismiss="modal">Fermer</button> 
        </div> 
       </form> 

      </div> 

     </div><!-- /.modal-content --> 
    </div><!-- /.modal-dialog --> 
</div><!-- /.modal --> 
<!-- **** deleteCritere **** --> 

Answer 1

您的操作正在向客户端抛出异常。

public JsonResult result(string examenId) 
{ 
    try{ 
    List<CentreExamen> r= centreExamenService.GetAll().ToList(); 
    return Json(r, JsonRequestBehavior.AllowGet); 
    } 
    catch(Exception e){ 
    return Json("exception occured while processing your request"); 
    } 
} 

现在处于调试模式，请检查您的centreExamenService.GetAll()方法。它抛出异常，或在这里发布方法。