Question

有问题的网格是一个简单的位置列表，基于这个集合：

public class Locations : BaseGrid
{
    public string zipCode { get; set;}
    public string city { get; set; }
    public string state { get; set; }
    public string timeZone { get; set;}
    public IPagination<Location> LocationList { get; set; }
}

和这个实体：

[DataContract] // DataContract/DataMember used for JsonSerializer
public class Location
{
    public int ID { get; set; }
    public string Address;
    public string AlternateSupportingLocationNumber;
    public string City;
    public string CompanyName;
    [DataMember]
    public string CTU;
    public string Description;
    public double Distance;
    [DataMember]
    public string LocationNumber;
    public string ManagerName;
    public string PhoneNumber;
    public string State;
    public string SupportingLocationNumber;
    public string TimeZone;
    public string ZipCode;
    public bool IsInPhysicalInventory;
    public bool IsEslOwned;
}

控制器，如下所示：

    public ActionResult NearestStoreCoverage( Locations locations )
    {
        if ( string.IsNullOrEmpty( locations.SortBy ) )
            locations.SortBy = "Distance";
        var list = _locationService.NearestStoreCoverage( locations, 50, ModelState );
        locations.LocationList = list.AsPagination(locations.Page ?? 1, list.Count);

        //go get locations that are close
        return View( "Details/NearestStoreCoverage", locations );

    }

获取视图的Locations列表作为Locations模型的LocationList成员，并填充此控件：

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Locations>" %>
<%@ Import Namespace="Models.Common"%>

<div class="detailSection" style="width:98%">
    <h1>Locations close to Zip Code -- <%=Model.zipCode %></h1>
    <div>
    <%= Html.Grid(Model.LocationList).Columns(column =>
         {
             column.For(x => x.LocationNumber)
                 .Named(Html.SortByLink("Location","LocationNumber"));
             column.For(x => x.Distance.ToString("N2")).Named(
                 Html.SortByLink("Distance", "Distance"));
             column.For(x => x.PhoneNumber.ToFormattedString()).
                 Named(Html.SortByLink("Phone Number",
                                       "PhoneNumber"));
             column.For(x => x.Address).Named(
                 Html.SortByLink("Address", "Address"));
             column.For(x => x.City).Named(
                 Html.SortByLink("City", "City"));
             column.For(x => x.State).Named(
                 Html.SortByLink("State", "State"));
             column.For(x => x.ZipCode).Named(
                 Html.SortByLink("ZipCode", "ZIpCode"));
         })
            .Attributes(style => "width:100%")
            .Attributes(id => "locationClosesttoZipGrid")
            .Empty("There are no locations close to this zipcode") %>
    <%= Html.Pager( Model.LocationList ).Link( page => Html.WritePageLink( page ) )%>
    </div>
</div>

当这个运行时，运行时错误是

System.ArgumentException was unhandled by user code
  Message=The property Models.Common.Location.LocationNumber could not be found.
  Source=System.Web.Mvc
  InnerException:

（我删除了客户端的堆栈跟踪，无论如何都很无聊）

但是，如果您调试并查看模型（这是来自Html.Grid（Model.LocationList）.Columns），您可以清楚地看到LocationNumber已填充：

A look at the Model in the debugger http://img839.imageshack.us/img839/6538/34gridresults.png

认为它不能变得陌生？如果我注释掉对LocationNumber的引用，调试器会允许距离和电话号码，然后再次在地址上失败（这也很明显）。

我尝试过重建，并使用F12所有相关符号来确保它们到达我认为应该去的地方。

调试器不会让我看看x，这是一个无赖。知道什么可能是错的，或者至少如何开始寻找？

Answer 1

麻烦的属性被声明为 fields 。

显然，网格可以处理属性和方法调用：对它们进行方法调用的字段是正在工作的字段。看起来字段不起作用。

（感谢Craig Stuntz指出这一点）

Html.Grid无法找到明显存在的模型属性

1 个答案: