Adding References in .Net Core Applications

Hi,

 

I am new to VS 2017 and .Net Core. I have worked for various flavours of Visual Studio like from VS 2005 to VS 2015. But it seems to me little difficult to add new references using VS 2017 and .Net Core 2.0. 

 

I have created simple Console application in VS 2017 and want to add 1 reference i.e. System.Web.UI, it seems to me little difficult for me b'coz I am not able to see any assemblies in Add Reference window. Please check below snippets for the same issue

 

 

Can anyone help me why it is not showing me any assembly in Add Reference window. And please explain me how this activity is differ in App Type like Web App, Windows App or Console App if any.

 

Thanks in Advance

 

Regards,

Avinash Phadke