startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;

namespace Demo
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
        }
    
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, Capture capture)
        {
            app.UseMvcAndSniffRoutes();
        }
    }
}