asp.net-mvc 错误“'~/Views/Page/home.aspx' 中的视图必须从 ViewPage、ViewPage<TViewData>、ViewUserControl 或 ViewUserControl<TViewDat
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Error "The view at '~/Views/Page/home.aspx' must derive from ViewPage, ViewPage<TViewData>, ViewUserControl, or ViewUserControl<TViewData>"
提问by Glenn Slaven
I've just installed MVC2 and I've got a view that looks like this
我刚刚安装了 MVC2，我有一个看起来像这样的视图
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Home.Master" Inherits="System.Web.Mvc.ViewPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Home
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Home</h2>
</asp:Content>
And the controller is just returning the view. But when I run the page I get this error:
而控制器只是返回视图。但是当我运行页面时，我收到此错误：
System.InvalidOperationException: The view at '~/Views/Page/home.aspx' must derive from ViewPage, ViewPage, ViewUserControl, or ViewUserControl.
System.InvalidOperationException：“~/Views/Page/home.aspx”中的视图必须从 ViewPage、ViewPage、ViewUserControl 或 ViewUserControl 派生。
回答by Levi
You might unintentionally have two versions of the MVC framework loaded into the same application. To confirm, download MVC 2 Futures from http://aspnet.codeplex.com/releases/view/41742. There is a file MvcDiagnostics.aspxin this ZIP file.
您可能会无意中将两个版本的 MVC 框架加载到同一个应用程序中。要确认，请从http://aspnet.codeplex.com/releases/view/41742下载 MVC 2 Futures 。此 ZIP 文件中有一个文件MvcDiagnostics.aspx。
- Copy MvcDiagnostics.aspx to the root of your web project.
- Reproduce the error.
- After reproducing the error, go to /MvcDiagnostics.aspx and see if it complains (will be in bold red lettering) about multiple versions of the framework being loaded. The tool should suggest a resolution if this is the case.
- 将 MvcDiagnostics.aspx 复制到 Web 项目的根目录。
- 重现错误。
- 重现错误后，转到 /MvcDiagnostics.aspx 并查看它是否抱怨（以粗体红色字体显示）正在加载多个版本的框架。如果是这种情况，该工具应建议解决方案。
Don't forget to delete MvcDiagnostics.aspx from your project when you are done.
完成后不要忘记从项目中删除 MvcDiagnostics.aspx。
回答by David
I was getting this error upgrading my MVC 1.0 project to MVC 2.0. If you are doing this have a look at http://weblogs.asp.net/leftslipper/archive/2010/03/10/migrating-asp-net-mvc-1-0-applications-to-asp-net-mvc-2-rtm.aspx
我在将我的 MVC 1.0 项目升级到 MVC 2.0 时遇到了这个错误。如果您这样做，请查看http://weblogs.asp.net/leftslipper/archive/2010/03/10/migrating-asp-net-mvc-1-0-applications-to-asp-net-mvc -2-rtm.aspx
Double check your web.config against a new MVC 2.0 project.
针对新的 MVC 2.0 项目仔细检查您的 web.config。
回答by Bohemian
Doing either a batch->build->clean at the solution level OR a clean at the project level usually takes care of this if you have already done the due diligence of removing/replacing the undesired version(s) of System.Web.Mvcfrom project references and *.config files...
batch->build->clea如果您已经完成了System.Web.Mvc从项目引用和 *.config 文件中删除/替换不需要的版本的尽职调查，那么在解决方案级别执行n 或在项目级别执行清理通常会解决这个问题...
回答by superlogical
You could try using the ASP.NET MVC 3 Application Upgrader
您可以尝试使用ASP.NET MVC 3 Application Upgrader
Best to do this with your code under source control, that way you can eye-ball everything that is changes. It updates your javascript which I didn't want so I reverted that, and only kept the changes it makes to the web.config for razor.
最好在源代码控制下使用您的代码执行此操作，这样您就可以观察所有更改。它更新了我不想要的 javascript，所以我恢复了它，并且只保留了它对 razor 的 web.config 所做的更改。
Be sure to read about what it does and what it doesn't support on this blog post.
请务必在此博客文章 中阅读它的功能和不支持的功能。
回答by BlackHymanetMack
I solved this problem for myself by having my custom view engine inherit RazorViewEngine directly.
我通过让我的自定义视图引擎直接继承 RazorViewEngine 为自己解决了这个问题。
public class MainViewEngine : RazorViewEngine
{
public MainViewEngine()
{...
}}
And then registering that viewengine in the Global.asax file Application_Start event:
然后在 Global.asax 文件 Application_Start 事件中注册该视图引擎：
ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new MainViewEngine());
Clearly this assumes that you are using Razor.
显然，这假设您正在使用 Razor。
回答by sree
Check the reference to System.Web.Mvc.dll file in your reference. Make sure its pointing to C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies\System.Web.Mvc.dll
检查参考中对 System.Web.Mvc.dll 文件的引用。确保它指向 C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies\System.Web.Mvc.dll
If its pointing to the one under ASP.NET MVC 4 directory then open your project file in a notepad. Look for
如果它指向 ASP.NET MVC 4 目录下的那个，则在记事本中打开您的项目文件。寻找
<Reference Include="System.Web.Mvc">
<Private>False</Private>
</Reference>
This should be changed to
这应该改为
<Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35, processorArchitecture=MSIL" />
This will help to point to the specific MVC version
这将有助于指向特定的 MVC 版本
