如何解决尝试以与数组不兼容的类型访问元素

Question

我正在尝试在我的代码中使用Grid.MVC。这个例子看起来很简单，但是当我尝试使用它时，我不断收到ArrayTypeMismatchException。

这是我的代码。关于如何解决它的任何想法？

//This is the my cshtml code.

 @Html.Grid(Model).Columns(columns => 
    {
        columns.Add(c => c.Name).Titled("Name");
        columns.Add(c => c.Operation).Titled("Operation").Filterable(true);
    }).WithPaging(3).Sortable(true)



//This is my controller code.

public ActionResult ListAllAuthorization()
{
    IList<AuthorizationWrapper> authorizations;
    using (GenericRepositoryV2 repo = new GenericRepositoryV2())
    {
        authorizations = repo.GetAllAuthorization();

    }
    return View(authorizations);
}

如果有什么不同，我的配置：

• MVC 5
• .Net 框架 4.5

更新 1： 堆栈跟踪：

at System.Collections.Generic.List`1.set_Item(Int32 index, T value)
at System.Collections.ObjectModel.Collection`1.SetItem(Int32 index, T item)
at System.Web.Routing.RouteCollection.SetItem(Int32 index, RouteBase item)
at System.Collections.ObjectModel.Collection`1.set_Item(Int32 index, T value)
at System.Web.Mvc.ControllerContext.get_RequestContext()
at GridMvc.Html.GridHtmlOptions`1.RenderPartialViewToString(String viewName, Object model, ViewContext viewContext)
at GridMvc.Html.GridHtmlOptions`1.ToHtmlString()
at System.Web.HttpUtility.HtmlEncode(Object value)
at System.Web.WebPages.WebPageExecutingBase.WriteTo(TextWriter writer, Object content)
at System.Web.WebPages.WebPageBase.Write(Object value)
at ASP._Page_Views_Admin_ListAllAuthorization_cshtml.Execute() in e:\Oman-Erp\OmanERP\Views\Admin\ListAllAuthorization.cshtml:line 28
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.StartPage.RunPage()
at System.Web.WebPages.StartPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)

Answer 1

这是一个很长的尝试，但我认为你应该尝试一下。

根据documentation page of ArrayTypeMismatchException

当系统无法将元素转换为为数组声明的类型时，将引发 ArrayTypeMismatchException。例如，String 类型的元素不能存储在 Int32 数组中，因为不支持这些类型之间的转换。

查看您提供的堆栈跟踪，我倾向于认为您传递给视图/网格的模型存在问题。从 action 方法中可以看出，您传递了一个 AuthorizationWrapper 对象列表，并且类型检查会阻止您在该列表中存储其他内容，因此问题介于两者之间。

首先在调试中检查视图的Model 属性；如果一切正常，只需下载source code，在本地构建它并查看（在调试模式下）异常弹出的位置。这就是开源的伟大之处:)

Answer 2

您需要将其包含在 web.config 中

<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>