How can I use .Net Core Class Library (.NetStandard v1.5) into .Net Framework 4.6.2 Application

If you get the latest .net core RTM release and the Update 3 VS tooling, things are a little nicer than they were during the RC period. Still don't have easy project references from csproj referencing xproj - but, you can get things to talk by packing up the xproj output into a nuget package, then using the package manager to install that package. Also, you shouldn't need the imports on the framework, nor the dependency on netstandard.library, at least I don't. Here's how I've done it:

• Create a .cmd file which will package the nuget files and two copy the output files to the folder where the package manager is expecting them. Here's that script, I call it makeNuget.cmd:

  IF "%1" == "%2" (

  dotnet pack --no-build --configuration %1 -o ../%3

  xcopy %4 "...\%3\lib\%5\" /Y

  )

• Add a postbuild script in the project.json of the xproj to run the script

  "scripts": {
  "postcompile": [ "makeNuget.cmd %compile:Configuration% Release packages\%project:Name% %compile:OutputDir% %compile:TargetFramework%"
  ] }

This should leave you with a nuget package in the packages\[projectName]\ folder at the root of your solution, with the binaries in the packages\[projectName]\lib\[targetFramwork]\ folder

• Now, you need to add the packages folder as a package source, so first open the package manager console, then click the little gear to add a package source (or Ctrl+Q, package sources, Enter). Then click the add button, name this source, browse or type in the packages directory and hit ok.
• In the package manager console, make sure both your package source and project are selected in the drop downs at the top.
• install-package [your package name]

AFAIK, that's as good as it gets at the moment.

Do you really need .Net Framework 4.6.2 app?

I just created PCL (Portable class library) targeting .NETStandard1.4 and I can use it in WPF app which is targeting .NET Framework 4.6.1. Here is how my project.json looks like in PCL project:

{
  "supports": {},
  "dependencies": {
    "Microsoft.NETCore.Portable.Compatibility": "1.0.1",
    "NETStandard.Library": "1.6.0"
  },
  "frameworks": {
    "netstandard1.4": {}
  }
}