Visual Studio 2015 不是语法高亮剃刀，也不是 Intellisense

Question

My Razor views in VS2015 RC are not showing the proper coloring for C# code. My project was working fine in VS2013, but it isn't in 2015, and it's not giving me any Intellisense on the C# code. The solution builds and the site runs fine.

I tried the following to no avail

• disabling all Visual Studio extensions
• deleting my .suo file
• removing the project and re-adding it to the solution

How can I fix this?

Example:

Answer 1

I've found in this answer another way to fix it without the devenv.exe /ResetUserData

Just delete the contents of this directory with Visual Studio closed: %LocalAppData%\\Microsoft\\VisualStudio\\<visual_studio_version_number>\\ComponentModelCache

To find the version number of the Visual Studio edition your are running please refer this list. Note that only the major number is important, the minor version can and will probably differ. In my case I had Visual Studio 2017 Enterprise installed so I looked for 15.xx and found 15.0_9a1c4a06 inside the AppData folder.

Answer 2

I had the same problem, the only fix so far is by resetting all user data ( C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\Common7\\IDE\\devenv.exe /ResetUserData ).

NOTE: You will lose all customizations, eg keyboard shortcuts and window layouts if you do this!

EDIT: People are saying this only works for RC, not RTM, so you might want to try the other fixes first.

Answer 3

I had the same problem in VS 2015 RTM and was able to fix it by simply loading Visual Studio in Safe Mode by:

C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe /SafeMode

then closing and reopening it normally.

Answer 4

After Updating Visual Studio 2015 Update 1 I had same issue. I tried all the answers but did not work for me.

The fix for me was going to programs and properties > Visual Studio community edition > Change. I clicked on modify.

In the list make sure to put a check mark on "Microsoft Web Developer Tools" under "Windows and Web Development" .

It was not checked in my list howewer :/

Answer 5

Tools > Options > Text Editor > All Languages > General. Uncheck the Hide advanced members option. Click OK.

Once I did that Intellisense seemed to work for me. I then reset it back and kept functionality. I'm using Visual Studio 2015 enterprise edition.

I had tried ResetUserData and that did not work for me.

Answer 6

I installed Visual Studio Community Edition 2015 (after using Visual Studio Community Edition 2013 for a long time) and faced the same issue. I tried all the above solutions but nothing helped.

Finally, close Visual studio and deleted the following folders -

C:\Users\Allwyn\AppData\Roaming\Microsoft\VisualStudio\14.0
C:\Users\Allwyn\AppData\Roaming\Microsoft\VisualStudio\14.0

... and it works now!!!

Answer 7

Running VS 2015 RTM. Neither /ResetUserData nor /SafeMode worked for me. Also had some Productivity Power Tools 2015 related complains with "errors-in-ActivityLog.xml" popup when starting VS.

So, if you have similar symptoms, here's how I fixed it on my machine:

1. Launch "Start Experimental Instance of Visual Studio 2015" and open your project. If the intellisense is working and razor syntax is highlighted, you have a great chances the following will work.
2. Uninstall "Productivity Power Tools 2015" and close Visual Studio.
3. Go to %LOCALAPPDATA%\\Microsoft\\VisualStudio\\ and erase 14.0 folder.
4. Launch VS - it should start as it was just installed.

PS Actually, it took me a couple times to get my intellisense working because I disabled the PowerTools first and it broke VS again when reenabled. So, it requires a complete reinstall. Might be caused by another extension in your case.

Answer 8

This will be the effect if your project is MVC4. See more details here . Also note that this will be corrected in an upcoming release.
How can you tell if your project is MVC4? Open packages.config and scroll to the entry for Microsoft.AspNet.Mvc. If the version listed starts with "4", this means you are using MVC 4.

Answer 9

I had a similar issue, where any razor script wouldn't be highlighted, intellisense wouldn't work and the compiler wouldn't recognise any errors (even where I intentionally put syntax errors in!)

I actually fixed the problem by going to C:/Users/YourUserName/AppData/Local/Temp and deleting everything out of this file, soon as I did that and restarted VS my Razor Views started to work!

Hope that helps!

Answer 10

Some views were working fine for me, some not at all... The only thing that helped for me:

• Closing VS
• Deleting C:\\Users\\%username%\\AppData\\Local\\Temp
• Restarting VS
• Problem solved

I tried most of the other solutions, too, but they didn't work for me.

Answer 11

Friendly reminder to make sure you have correctly used the lowercase @model at the top of your view, and not @Model (like I made the mistake of doing).

Lowercase @model is a directive that strongly types the view to an instance of the class that follows it. Whereas the capitalized Model is a property of the view that gets the model instance.

Answer 12

I fixed the issue by including the file in the project/solution. I'd overlooked the fact that there's no highlighting/intellisense if it's not included.

Answer 13

I had the same problem and had to download and install "Microsoft ASP.NET and Web Tools" and "Web Essentials". After doing this syntax highlighting and Razor intellisense started working again.

Answer 14

In my Web.config I had this:

    <system.web.webPages.razor>
        <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <pages pageBaseType="System.Web.Mvc.WebViewPage">
          <namespaces>
            <add namespace="LinkApp.Models.Templates"/>
            <add namespace="System.Web.Mvc" />
            <add namespace="System.Web.Mvc.Ajax" />
            <add namespace="System.Web.Mvc.Html" />
            <add namespace="System.Web.Optimization"/>
            <add namespace="System.Web.Routing" />
            <add namespace="LinkApp" />
          </namespaces>
        </pages>
      </system.web.webPages.razor>

Oddly enough, I moved my custom namespace to the bottom, and that fixed it, like this:

<system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    <pages pageBaseType="System.Web.Mvc.WebViewPage">
      <namespaces>
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Optimization"/>
        <add namespace="System.Web.Routing" />
        <add namespace="LinkApp" />
        <add namespace="LinkApp.Models.Templates"/>
      </namespaces>
    </pages>
  </system.web.webPages.razor>

Answer 15

Uninstalled and reinstalled of the following worked for me:

Microsoft.AspNet.Mvc

Microsoft.AspNet.WebPages

Microsfot.AspNet.Razor

I tried the reset userdata, deleting of temp and 14, as well as changing options settings and none of those worked. I even tried repaired and reinstalled. I am using VS 2015 Version 14.0.24720.00 Update 1

Answer 16

You should only remove the ".vs" folder in your project.(The .vs folder is hidden)

Be careful ResetUserData remove all customization on Visual Studio.

Answer 17

The only thing that worked for me was to change the project's "Output Path" to bin\\ (It used to be bin\\Debug ):

1. Right-click on the project,
2. Click on Properties and navigate to Build ,
3. Scroll to the last section titled "Output",
4. Change the value in the text box labeled Output path: to bin\\

Answer 18

Above doesn't work but I managed with:

• Uninstalling (from Windows Program And Features) Web Developer Tools for VS 2015, RC, Update 1
• Installing (from VS Installer -> Modify) Web Developer Tools (it's another version of above)

So the problem was that VS installer didn't install Web Developer Tools recognizing already installed, incompatible version as the proper one.

Answer 19

I fixed this problem by updating my project to ASP .NET MVC version 5. But it required some futher manipulations with configuration files. Here I found the step-by-step guide:

• in global.asax, change: WebApiConfig.Register(GlobalConfiguration.Configuration); to GlobalConfiguration.Configure(WebApiConfig.Register);
• Make sure all the packages that your projects use are compatible with MVC 5 and Web API 2
• Remove any of the following ASP.NET NuGet packages that are installed:
  1. Microsoft.AspNet.WebPages.Administration
  2. Microsoft-Web-Helpers ( do not confuse with Microsoft.AspNet.WebHelpers ! )
  3. Microsoft.AspNet.Mvc.FixedDisplayMode
• Upgrade all the ASP.NET NuGet packages. In the Package Manager Console you can run the following command: Update-Package . Without any parameters it will update every package.
• Update the Application and Views config Files:
  1. For all elements with the name attribute “System.Web.Mvc” , change the version number to new one (check version of assembly in solution explorer, it has to be equals to or higher than “5.0.0.0”)
  2. Do the same for all elements with the name attribute "System.Web.Helpers” and "System.Web.WebPages" .
  3. Check binding redirects for assemblies "System.Web.Helpers" , "System.Web.Mvc" and "System.Web.WebPages" in configuration files, "oldVersion" and "newVersion" must comply with the changes made above.
  4. Locate the appSettings section and update the webpages:version from "2.0.0.0.0" to "3.0.0.0"
  5. Update all elements that contain “System.Web.WebPages.Razor” from version “2.0.0.0” to version “3.0.0.0”. If this section contains “System.Web.WebPages” , update those elements from version “2.0.0.0” to version “3.0.0.0”
  6. If you removed the Microsoft-Web-Helpers NuGet package in a previous steps, install Microsoft.AspNet.WebHelpers with the following command in the Package Manager Console: Install-Package -Id Microsoft.AspNet.WebHelpers

I hope this will help.

Answer 20

A non-invasive approach is to check your Views web.config files for the correct Versions. These Web.config files are under app/Area/AreaName/Views or the general app/Views folders. They are different than the project Web.config file.

• Make sure each Version in the type assembly strings matches your NuGet installed version
• Make sure the Version in the factoryType assembly string matches your NuGet installed version

Here is an example for the latest as of the writing of this comment:

<configSections>
 <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
 <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
 <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
 </sectionGroup>
 </configSections>
<system.web.webPages.razor>
 <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />

Answer 21

What worked for me (VS 2015 Community) was the option suggested in this answer. Running cmd.exe as administrator, I ran the following:

C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe /setup

Answer 22

我一直在下载和安装“Microsoft ASP.NET and Web Tools”和“Web Essentials”，它对我有用。