C# 无法加载文件或程序集“System.Web.WebPages”
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Could not load file or assembly 'System.Web.WebPages'
提问by Anton Gildebrand
I've had this problem before, but then all i needed to do was to clean and rebuild the project. Now that doesnt seem to work anymore. When i start my Asp.Net MVC3 project debugger, the site is opened in my browser. Instead of getting the first page presented in the browser, i get this error
我以前遇到过这个问题，但是我需要做的就是清理和重建项目。现在这似乎不再起作用了。当我启动我的 Asp.Net MVC3 项目调试器时，该站点在我的浏览器中打开。我没有在浏览器中显示第一页，而是收到此错误
Parser Error Message: Could not load file or assembly 'System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
Source Error:
Line 31: <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
Line 32: <add assembly="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
Line 33: <add assembly="System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
Line 34: </assemblies>
Line 35: </compilation>
I can't seem to figure out how to solve this. Any idea?
我似乎无法弄清楚如何解决这个问题。任何的想法？
采纳答案by zuallauz
I had this problem. Maybe it occurred when I installed .NET MVC v4 over the top of MVC v3, not sure.
我有这个问题。也许它发生在我在 MVC v3 之上安装 .NET MVC v4 时，不确定。
Anyway I removed the System.Web.WebPagesreference from my project. Then in the Add Reference dialogue .NET tab there were two System.Web.WebPages references listed, a version 1.0.0.0 and a 2.0.0.0. I made sure to add the version 1.0.0.0 one as that was the one that was missing.
无论如何，我System.Web.WebPages从我的项目中删除了参考。然后在“添加引用”对话框 .NET 选项卡中列出了两个 System.Web.WebPages 引用，一个版本 1.0.0.0 和一个 2.0.0.0。我确保添加了 1.0.0.0 版本，因为那是缺少的版本。
回答by centralscru
I scratched my head for a while over this problem when I had it. Eventually I noticed that I had the following section in the "runtime" section of my web.config.
当我遇到这个问题时，我为这个问题挠了一阵子。最终我注意到我的 web.config 的“运行时”部分中有以下部分。
<runtime>
. . .
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>
. . .
</runtime>
As you can see, this refers to version 2 of the assembly, which doesn't match the following code that you also have in the system.web/compilation/assemblies section of web.config.
如您所见，这是指程序集的第 2 版，它与您在 web.config 的 system.web/compilation/assemblies 部分中的以下代码不匹配。
<add assembly="System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
The actual assembly referenced in References for the project is indeed v1.0.0.0, so I changed the first chunk of code above to the following, which fixed the problem immediately. I'm not sure how the mistake got there in the first place.
项目引用中引用的实际程序集确实是 v1.0.0.0，因此我将上面的第一块代码更改为以下代码，立即解决了问题。我不确定错误最初是如何发生的。
<runtime>
. . .
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-1.0.0.0" newVersion="1.0.0.0" />
</dependentAssembly>
. . .
</runtime>
回答by Robert Tanenbaum
The solution for me was to go to my server and install the Web Pages Version 2 on the server.
我的解决方案是转到我的服务器并在服务器上安装网页版本 2。
Go to http://www.microsoft.com/en-us/download/details.aspx?id=34600
转到http://www.microsoft.com/en-us/download/details.aspx?id=34600
And download the package and run it.
并下载包并运行它。
It was as simple as that.
就这么简单。
回答by Ravenix
I had this issue, all I had to do was change the property of the external reference: Specific Version from Trueto False
我遇到了这个问题，我所要做的就是更改外部引用的属性：Specific Version from Trueto False
After that the project build again.
之后，项目再次构建。
回答by Doron Saar
Worked for me:
为我工作：
Tools -> NuGet Package Manager -> Manage NuGet Packages for Solution
Browse
Search for "Microsoft.AspNet.WebPages"
Make sure all projects in solution have the latest version.
工具 -> NuGet 包管理器 -> 管理解决方案的 NuGet 包
浏览
搜索“Microsoft.AspNet.WebPages”
确保解决方案中的所有项目都具有最新版本。
回答by reza.cse08
I have fetch same problem for MVC5.
我为 MVC5 获取了同样的问题。
At First Check your System.Web.WebPagesassembly from Reference of your project.
首先从您的项目参考中检查您的System.Web.WebPages程序集。
- If not found, then add by select add referencefrom project Reference.
- If found, any the check version from Propertiesof that reference. Then check your project web.configfile. May be this two versions are not matching.
- 如果未找到，则通过从项目引用中选择添加引用来添加。
- 如果找到，则来自该引用的属性的任何检查版本。然后检查您的项目web.config文件。可能是这两个版本不匹配。
For me, I add a reference of version 2.0.0.0. but my web.config file reference it from
对我来说，我添加了 2.0.0.0 版本的引用。但我的 web.config 文件从
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
and I change it to
我把它改成
<bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
<bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
it works for me in MVC5.
它在 MVC5 中对我有用。
Please check highlighted section in my attachment for more clearance.
请检查我的附件中突出显示的部分以获得更多许可。
回答by Thach Lockevn
Go to menu: "Tools / Nuget Package Manager / Package Manager Console"
转到菜单：“工具/Nuget 包管理器/包管理器控制台”
run command install-package Microsoft.AspNet.WebPages
运行命令 install-package Microsoft.AspNet.WebPages
