我正在尝试运行我的第一个 ASP.NET MVC 应用程序。我创建了一个 Controller 和 View 。数据取自数据库。但是，当项目可以运行但当我尝试导航客户页面时，出现以下错误。

The model item passed into the dictionary is of type 'System.Collections.Generic.List`1[MvcApplication3.Models.Customer]', but this dictionary requires a model item of type 'MvcApplication3.Models.Customer'.

我在这里有点困惑，因为错误说它有请求模型类型。

堆栈跟踪是

Stack Trace:

[InvalidOperationException: The model item passed into the dictionary is of type 'System.Collections.Generic.List1[MvcApplication3.Models.Customer]', but this dictionary requires a model item of type 'MvcApplication3.Models.Customer'.]<br/> System.Web.Mvc.ViewDataDictionary1.SetModel(Object value) +585211
System.Web.Mvc.ViewDataDictionary..ctor(ViewDataDictionary dictionary) +371 System.Web.Mvc.ViewPage1.SetViewData(ViewDataDictionary viewData) +48 System.Web.Mvc.WebFormView.RenderViewPage(ViewContext context, ViewPage page) +73<br/> System.Web.Mvc.WebFormView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +38<br/> System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115<br/> System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +295 System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13<br/> System.Web.Mvc.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17() +23 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func1 continuation) +242
System.Web.Mvc.<>c_DisplayClass1c.b_19() +21 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList1 filters, ActionResult actionResult) +177<br/> System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +89 System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +102 System.Web.Mvc.Async.WrappedAsyncResult1.End() +57 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +43
System.Web.Mvc.<>c_DisplayClass1d.b_18(IAsyncResult asyncResult) +14
System.Web.Mvc.Async.<>c_DisplayClass4.b_3(IAsyncResult ar) +23 System.Web.Mvc.Async.WrappedAsyncResult1.End() +62<br/> System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +57 System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23 System.Web.Mvc.Async.WrappedAsyncResult1.End() +62
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +47
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
System.Web.Mvc.<>c_DisplayClass8.b_3(IAsyncResult asyncResult) +25
System.Web.Mvc.Async.<>c_DisplayClass4.b_3(IAsyncResult ar) +23 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +47 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9514812 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

这是我的 Controller 代码。

namespace MvcApplication3.Controllers
{
    public class CustomerController : Controller
    {
        //
        // GET: /Customer/

        public ActionResult Index()
        {
            Models.NorthwindDataContext nwd = new Models.NorthwindDataContext();
            return View(nwd.Customers.ToList());
        }

    }
}

这是 View

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<MvcApplication3.Models.Customer>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    Index
</asp:Content>

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

<h2>Index</h2>

</asp:Content>

<asp:Content ID="Content3" ContentPlaceHolderID="FeaturedContent" runat="server">
</asp:Content>

<asp:Content ID="Content4" ContentPlaceHolderID="ScriptsSection" runat="server">
</asp:Content>

谁能给我一个修复的提示？

最佳答案

您正在尝试将集合传递给专为单个对象设计的 View 。

将您的 View 声明更改为

Inherits="System.Web.Mvc.ViewPage<IEnumerable<MvcApplication3.Models.Customer>>

关于c# - 如何修复传入字典的模型项类型错误？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21483125/