表单上的多个PartialViews产生NullReferenceException：对象引用未设置为对象的实例

我有以下观点，我已经开发了（使用VS 2010 ASP.NET MVC4）作为各种各样的仪表板，它有四个不同的部分视图，它们呈现给管理：

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Manager.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %>

<asp:Content ID="indexTitle" ContentPlaceHolderID="TitleContent" runat="server">
AMS Utility - Manager Home Page
</asp:Content>

<asp:Content ID="Content1" ContentPlaceHolderID="FeaturedContent" runat="server">
<section class="featured">
    <div class="content-wrapper">
        <hgroup class="title">
            <h1>AMS Utility - Property Tax Manager's Dashboard</h1>                
        </hgroup>
    </div>
</section>  
</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

<% Html.RenderAction("IndexTopImports"); %>
<% Html.RenderAction("IndexTopXfrReqs"); %>
<% Html.RenderAction("IndexBURequests"); %>
<% Html.RenderAction("IndexTopCompanyRequests"); %>

</asp:Content>

以下是与上述RenderAction相关的控制器操作之一（所有操作方式相同：（1）从DTO获取数据;（2）返回包含数据的局部视图）：

[ChildActionOnly]
public PartialViewResult IndexTopImports()
{
    ManagersDashboardDTO importDTO = new ManagersDashboardDTO();
    return PartialView("IndexTopImports", importDTO.GetImportList());
}

这是被调用的部分视图（IndexTopImports.ascx）之一 . 所有格式都是相同的，因为我向视图传递了要显示的数据列表：

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<IEnumerable<AMSUtilityMVC4.ViewModels.MgrsDashboardActiveImportsViewModel>>" %>

<h2 style="color:Green">Most Recent State Imports</h2>

<table>
    <colgroup>
        <col span="1", style="width:25%;">
        <col span="1", style="width:35%;">
        <col span="1", style="width:35%;">
    </colgroup>

    <tr>
        <th>
            State
        </th>
        <th>
            Import Date
        </th>
        <th>
            Imported By
        </th>
    </tr>

<% foreach (var item in Model) { %>    
    <tr>
        <td>
            <%: item.stateAcronym %>
        </td>
        <td>
            <%: item.importDate %>
        </td>
        <td>
            <%: item.importedBySOEID %>
        </td>
    </tr>    
<% } %>
</table>

当我在本地运行这个应用程序它工作得很好，但当我上传到IIS时，我得到一个[NullReferenceException：对象引用未设置为对象的实例] . 这是堆栈跟踪：

[NullReferenceException：对象引用未设置为对象的实例 . ] C：\ Visual Studio Projects \ AMSUtilityMVC4 \ AMSUtilityMVC4 \ Models \ MgrDashboardTopXfrRequests.designer.cs中的AMSUtilityMVC4.Models.MgrDashboardTopXfrRequestsDataContext..ctor（）：38 AMSUtilityMVC4.Models C：\ Visual Studio Projects \ AMSUtilityMVC4 \ AMSUtilityMVC4 \ Models \ Data Transfer Objects \ ManagersDashboardDTO.cs中的.Data_Transfer_Objects.ManagersDashboardDTO..ctor（）：C：\ Visual Studio Projects \ AMSUtilityMVC4中的12 AMSUtilityMVC4.Controllers.ManagersController.IndexTopImports（） \ AMSUtilityMVC4 \ Controllers \ ManagersController.cs：73 lambda_method（Closure，ControllerBase，Object []）78 System.Web.Mvc.ReflectedActionDescriptor.Execute（ControllerContext controllerContext，IDictionary2 parameters）247 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod（ControllerContext controllerContext） ，ActionDescriptor actionDescriptor，IDictionary2参数）38 System.Web.Mvc.Async . <> c__DisplayClass39.b__33（）124 System.We b.Mvc.Async . <> c__DisplayClass4f.b__49（）452 System.Web.Mvc.Async . <> c__DisplayClass37.b__36（IAsyncResult asyncResult）15 System.Web.Mvc.Async . <> c__DisplayClass2a.b__20（）31系统 . Web.Mvc.Async . <> c__DisplayClass25.b__22（IAsyncResult asyncResult）230 System.Web.Mvc . <> c__DisplayClass1d.b__18（IAsyncResult asyncResult）28 System.Web.Mvc.Async . <> c__DisplayClass4.b__3（IAsyncResult ar）20 System.Web.Mvc.Controller.EndExecuteCore（IAsyncResult asyncResult）53 System.Web.Mvc.Async . <> c__DisplayClass4.b__3（IAsyncResult ar）20 System.Web.Mvc . <> c__DisplayClass8.b__3（IAsyncResult asyncResult）42系统 . Web.Mvc.Async . <> c__DisplayClass4.b__3（IAsyncResult ar）20 System.Web.Mvc . <> c__DisplayClass4.b__3（）15 System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap（Func1 func）41 System.Web.HttpServerUtility . ExecuteInternal（IHttpHandler处理程序，TextWriter编写器，Boolean preserveForm，Boolean setPreviousPage，VirtualPath路径，VirtualPath filePath，字符串physPath，异常错误，字符串queryString覆盖）1443 [HttpException（0x80004005）：执行处理程序System.Web.Mvc.HttpHandlerUtil ServerExecuteHttpHandlerAsyncWrapper的子请求时出错 . ] System.Web.HttpServerUtility.ExecuteInternal（IHttpHandler handler，TextWriter writer，Boolean preserveForm，Boolean setPreviousPage，VirtualPath path，VirtualPath filePath ，String physPath，Exception error，String queryStringOverride）2515 System.Web.HttpServerUtility.Execute（IHttpHandler handler，TextWriter writer，Boolean preserveForm，Boolean setPreviousPage）242 System.Web.HttpServerUtilityWrapper.Execute（IHttpHandler handler，TextWriter writer，Boolean preserveForm）94 System.Web.Mvc.Html.ChildActionExtensions.ActionHelper（HtmlHelper htmlHelper，String actionName，String controllerName，RouteValueDictionary routeValues，TextWriter textWriter）693 System.Web.Mvc.Html.ChildActionExtensions.RenderAction（HtmlHelper htmlHelper，String actionName，String controllerName，RouteValueDictionary routeValues）56 ASP.views_managers_in dex_aspx .__ RenderContent2（HtmlTextWriter __w，Control parameterContainer）位于c：\ inetpub \ wwwroot \ AMSUtility \ Views \ Managers \ Index.aspx：23 System.Web.UI.Control.RenderChildrenInternal（HtmlTextWriter writer，ICollection children）131 ASP.views_shared_manager_master . __Render__control1（HtmlTextWriter __w，Control parameterContainer）位于c：\ inetpub \ wwwroot \ AMSUtility \ Views \ Shared \ Manager.Master：54 System.Web.UI.Control.RenderChildrenInternal（HtmlTextWriter writer，ICollection children）131 System.Web.UI . Control.RenderChildrenInternal（HtmlTextWriter writer，ICollection children）246System.Web.Mvc.ViewPage.Render（HtmlTextWriter writer）85 System.Web.UI.Page.ProcessRequestMain（Boolean includeStagesBeforeAsyncPoint，Boolean includeStagesAfterAsyncPoint）5290

如果不重写视图以不使用部分视图，我就不知道如何解决这个挑战 . 任何想法或建议？