adding class library to web application with net core

Question

I'v created a web application with net core and with this project

"frameworks": {
    "net461": {
      "dependencies": {
        "Core": {
          "target": "project"
        }
      }
    }    
  },

Then I've crated a class library net core with this project

  "dependencies": {
    "NETStandard.Library": "1.6.0"
  },

  "frameworks": {
    "netstandard1.6": {
      "imports": "dnxcore50"
    }
  }

but when I try to add the class project to web application, VS2015 tell me

The following project are not supported as reference.
WebApplication:
.NETFramework, Version=v4.6.1
ClassLibrary:
.NETStandard, Version=v1.6

How can I add class library to main project?

Answer 1

You have to start your project as a dotnetcore project (see image below) because it seems like you want to add a framework 4.6 file to your dotnetcore application.

for more information about dotnetcore compatibulity check this post Compatibility between dotnetcore and framework 4.5

Answer 2

If you want to target .NET framework 4.6.1, your class library must be .NET Standard 1.4 or lower as suggested on official docs - How to target the .NET Standard

1) Create .NET core class library. project.json looks like this-

{
  "version": "1.0.0-*",

  "dependencies": {
    "NETStandard.Library": "1.6.0"
  },

  "frameworks": {
    "netstandard1.4": {
      "imports": "dnxcore50"
    }
  }
}

2) In ASP.NET Core application (.NET framework), it can reference like below-

  "frameworks": {
    "net461": {
      "dependencies": {
        "ClassLibrary1": {
          "target": "project"
        }
      }
    }    
  },