Sample startup.cs

startup.cs

 public class Startup
    {
        public Startup(IHostingEnvironment env, IApplicationEnvironment env2)
        {
           
        }

        public IConfigurationRoot Configuration { get; set; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            // Add framework services.
            services.AddMvc();

            services.AddSingleton<ITestDependencyInjection, MyTestDependencyInjection>();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            app.Use(async (ctx, next) =>
            {
                ITestDependencyInjection testdi = ctx.ApplicationServices.GetService<ITestDependencyInjection>();
                Console.WriteLine("App.use -0 before next: " + testdi.GetAndIncrementCounter());
                await next();
                Console.WriteLine("App.use - after next: " + testdi.GetAndIncrementCounter());
            });
            app.UseMvc();



        }

        // Entry point for the application.
        public static void Main(string[] args) => WebApplication.Run<Startup>(args);
    }