cannot add reference to .net core Class library asp.net core rc2

Question

I am a newbie in the asp.net net core world and I am struggling to adding a simple ref . I get an error

Steps

1) Created an "Asp.net Core Web Application(Net Framework) RC2"

2) Added a Class Library (.Net core) called "ClassLibrary1")

3)Within the web app.Project.json i added a reference to the classlibrary1 like this

"dependencies": { "ClassLibrary1": "1.0.0-*", etc...

4) Get error

Severity Code Description Project File Line Suppression State Error

NU1001 The dependency ClassLibrary1 could not be resolved.

I understand why microsoft is doing this as they want to be lean and modular,however there should be an option that would add the reference for you like in the classic library.It's a step back in my view.

Is this a bug or its me?

thanks for any reply

Resharper can be the problem too. You can try disabling it. Tools > Options > Resharper — ben
– ben, Commented Aug 22, 2016 at 8:50

Josh Schultz · Accepted Answer · 2017-09-14 16:26:58Z

4

Change your project.json in your class library to .netstandard1.4 (or lower).

Your web application is stating .NET Framework 4.6.1, but netstandard 1.5 can only target 4.6.2+ (related to .NET Framework that is).

https://github.com/dotnet/standard/blob/master/docs/versions.md

{
  "version": "1.0.0-*",

  "dependencies": {
    "NETStandard.Library": "1.5.0-rc2-24027"
  },

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

edited Sep 14, 2017 at 16:26

answered May 23, 2016 at 17:07

Josh Schultz

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3 Comments

Jérôme MEVEL Over a year ago

Sorry I totally misunderstood the meaning of the -> in the link you shared. I edited your post and added another link which makes things more clear IMHO. But the edit was mostly to be able to remove my downvote, but I still can't... Sorry about that

alexxjk Over a year ago

@Josh Schultz, I'm having the same problem with the last version of .NET Core. I have changed "netstandard1.6" into "netstandard1.4" but it didn't help. Has the solution changed after they released .NET Core?

Christian Findlay Over a year ago

I'm having this same issue. NuGet no longer allows you to get .NetStandard 1.4. It only allows 1.6 through the front end, or "1.5.0-rc2-24027" if you edit it directly in the project.json

Michael Giger · Accepted Answer · 2016-05-23 20:52:55Z

3

I ran into the same Problem. I had to manually run "Restore Packages" and the error was gone!

answered May 23, 2016 at 20:52

Michael Giger

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