ASP.NET MVC 4 Beta版打破开发商preVIEW项目 [英] ASP.NET MVC 4 Beta Breaks Developer Preview Projects

问题描述

升级到我的ASP.NET MVC 4开发preVIEW组件到最新的MVC 4测试版后，将出现以下异常为我的MVC 4个项目：

After upgrading to my ASP.NET MVC 4 Developer Preview assemblies to the latest MVC 4 beta, the following exception occurs for my MVC 4 projects:

Could not load type 'System.Web.WebPages.DisplayModes' from assembly
'System.Web.WebPages, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35'.

...

Exception Details: System.TypeLoadException: Could not load type
'System.Web.WebPages.DisplayModes' from assembly 'System.Web.WebPages,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.

我该如何解决这个问题？

How do I fix this?

更新：我安装了新的MVC 4 Beta版的NuGet包，增加最合适的组件，但现在我得到的编译缺少DisplayModes错误：

Update: I installed the new MVC 4 Beta NuGet package, which added most of the right assemblies, but now I get the missing DisplayModes error on compile:

The name 'DisplayModes' does not exist in the current context.

有关在下面的一段code的的Global.asax.cs ：

For the following piece of code in Global.asax.cs:

DisplayModes.Modes.Insert(0, new DefaultDisplayMode("iPhone") { ... });

2日更新：解决

推荐答案

的 DisplayModes 语法已更改为：

DisplayModeProvider.Instance.Modes.Insert(0, new DefaultDisplayMode("iPhone")
    {
    ...
    });

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