How to include reference to assembly in ASP.NET Core project

Question

I have this line

string sConnectionString = ConfigurationManager.ConnectionStrings[\"Hangfire\"].ConnectionString;

And it requires to include

Answer 1

@Dimi Right Click on References folder -> Add References -> Search configuration -> check on System.Configuration -> Click on ok.

then add Namespaces on your .cs file i.e

using System.Configuration;