Is there supposed to be Intellisense for the new asp- tag helpers in Razor/MVC 6? I was following along on one of Shawn Wildermuth\'s courses on Pluralsight and
In my case, my project did not use the project.json, I use Visual Studio 2017 with the csproj file.
I simply needed to install (Tools -> Extentions and Updates...) this tool for Visual Studio (Razor Language Services):
After I did that, I restarted Visual Studio, it installed the tool and then I got the intellisense working.