title: Where To set my connection string in WPF Core 3?
body: <p>I have a <strong>DDD</strong> project (aspnetboilerplate solution) , that i want to extend with WPF Core3.
  I didn't find where to set my connection string in Wpf Core 3, there is no <strong>appsetting.json</strong> or <strong>app.config</strong> ? </p>