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c# - 在 Asp.net MVC 中出现类似 "Object reference is not set to Reference of the Object"的错误

转载 作者：行者123 更新时间：2023-11-30 16:12:29 24 4
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我有模型课

 namespace Project1.Models
 {
  public class GetTimesheetList
  {
   public List<TimesheetModel> GetTimesheetDetails { get; set; }
  }
  public class TimesheetModel
  {
    ResLandEntities res = new ResLandEntities();

    public int WEEK_CAL_ID { get; set; }
    public int COMP_ID { get; set; }
    public int RES_ID { get; set; }
    public int PROJ_ID { get; set; }
    public string DESCR { get; set; }
    public int TEXTBOX_WEEK_ID { get; set; }

    public int EMP_ID { get; set; }


    public int SUN_HRS { get; set; }


    public int MON_HRS { get; set; }


    public int TUE_HRS { get; set; }


    public int WED_HRS { get; set; }


    public int THU_HRS { get; set; }


    public int FRI_HRS { get; set; }


    public int SAT_HRS { get; set; }


    public string START_DATE { get; set; }

    public string END_DATE { get; set; }

    public string IS_DELETED { get; set; }

    public string CR_BY { get; set; }

   }
  }

In View I Have written like

   @model Project1.Models.GetTimesheetList
   @using (Html.BeginForm("Timesheet", "Employer", FormMethod.Post))

  {

     @Html.AntiForgeryToken()
     @Html.ValidationSummary(true)
     <table class="list-chiller-record">
     @for (int i = 0; i < Model.GetTimesheetDetails.Count; i++)// GETTING NULL REFERENCE HERE.
     {
       if (i == 0)
       {
         <tr class="chiller-record-template" style="display: none">
           <td>@Html.TextBoxFor(m => m.GetTimesheetDetails[i].SUN_HRS, new { style = "width:50px; height:30px;", @class = "sunhrs" })
            </td>
           <td>@Html.TextBoxFor(m => m.GetTimesheetDetails[i].MON_HRS, new { style = "width:50px; height:30px;", @class = "monhrs" })
            </td>
           <td>@Html.TextBoxFor(m => m.GetTimesheetDetails[i].TUE_HRS, new { style = "width:50px; height:30px;", @class = "tuehrs" })
             </td>
           <td>@Html.TextBoxFor(m => m.GetTimesheetDetails[i].WED_HRS, new { style = "width:50px; height:30px;", @class = "wedhrs" })
             </td>
           <td>@Html.TextBoxFor(m => m.GetTimesheetDetails[i].THU_HRS, new { style = "width:50px; height:30px;", @class = "thurhrs" })
            </td>
           <td>@Html.TextBoxFor(m => m.GetTimesheetDetails[i].FRI_HRS, new { style = "width:50px; height:30px;", @class = "frihrs" })
            </td>
           <td>@Html.TextBoxFor(m => m.GetTimesheetDetails[i].SAT_HRS, new { style = "width:50px; height:30px;", @class = "sathrs" })
             </td>
            </tr>    
        }
      }

///已编辑。

从 Controller 

      public Employer Controller
       {
         public ActionResult Timesheet()
         {
           return View();
         }
       }

这有什么问题

          "Object reference not set to reference of the object"

我从模型类调用列表并返回列表元素的“计数”，它应该返回没有。列表中的元素，但返回空引用。请任何人帮助我，我该如何解决？？

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