Intellisense and error highlighting not working by default in VS2012

问题

I've recently bought a new computer and as such have had to install visual studio 2012 onto it. When I installed it onto my last computer, everything worked fine by default; this time, auto-completion is off/not working and neither is error highlighting.

I've tried resetting the settings to their defaults but this has had no effect.

What else can I try?

Thanks.

回答1:

Did you try the second suggestion here Intellisense and code suggestion not working in Visual Studio 2012 Ultimate RC

Delete the files in this folder:

%AppData%\Roaming\Microsoft\VisualStudio\11.0\ReflectedSchemas

回答2:

Select Tool -> Options, then Text Editor. Under the language you are using (ie C#), go to the Advanced and make sure the Underline errors in the editor and Show live semantic errors are checked

来源：https://stackoverflow.com/questions/13783969/intellisense-and-error-highlighting-not-working-by-default-in-vs2012