.net - What class library to use to be reference on UWP and ASPNETCORE apps -

i create class library can used on aspnetcore app , uwp app.

please correct me if i'm wrong, way understand image below (first image) can create .net core class library , have reference uwp , aspnetcore.

what i've done created, .net core class library, aspnet core web app, , uwp.

i tried reference .net core class library on aspnet core web app, no errors. now, tried reference .net core class library on uwp , showed error below (last image).

am better of creating pcl instead stated here?

ps. im using vs2015 update 3

the tooling available in visual studio 2017 release candidate. can create .net standard class library template , use facilitate sharing code (e.g. model objects) between asp.net core app , universal windows platform (uwp) app.

.net standard class library considered successor portable class library (pcl).