How to define an endpoint route to multiple areas

Question

I am trying to define a MapAreaControllerRoute() that routes to multiple Areas. In ASP.NET Core 3.0, however, there is the areaName: parameter that

Answer 1

You can write a generic pattern for areas using MapControllerRoute():

app.UseEndpoints(endpoints =>
{
    endpoints.MapControllerRoute(
        name: "areas",
        pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}"
    );
    endpoints.MapDefaultControllerRoute();
});

Then the area controllers just need the Area attribute:

[Area("AreaName")]
public class HomeController : Controller
{
    public IActionResult Index()
    {
        return View();
    }
}