adding atribure rout

Helloword_core/Controllers/HomeController.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+
+// For more information on enabling MVC for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860
+
+namespace Helloword_core.Controllers
+{
+    [Route("Home")]
+    public class HomeController : Controller
+    {
+        [Route("")]
+        [Route("Index")]
+        // GET: /<controller>/
+        public string Index()
+        {
+            return "Hello from HomeController";
+        }
+
+        [Route("About")]
+        public string About()
+        {
+            return "About";
+        }
+    }
+}

Helloword_core/Helloword_core.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp2.1</TargetFramework>

Helloword_core/Startup.cs

@@ -16,18 +16,20 @@ public class Startup
         // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
         public void ConfigureServices(IServiceCollection services)
         {
-            //services.AddSingleton<IHello, Hello>();
+            services.AddSingleton<IHello, Hello>();
+            services.AddMvc();
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILogger<Startup> logger)
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILogger<Startup> logger, IHello hello)
         {
             if (env.IsDevelopment())
             {
                 app.UseDeveloperExceptionPage();
             }
 
             app.UseStaticFiles();
+            app.UseMvcWithDefaultRoute();
             app.Map("/test", testPipeline);
             app.Use(next => async context =>
            {
@@ -38,7 +40,7 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILogger<
             app.Run(async (context) =>
             {
                 logger.LogInformation("Response Served."); 
-                await context.Response.WriteAsync("hello word");
+                await context.Response.WriteAsync(hello.SayHello());
             });
         }