title: Global.asax.cs name 'RouteConfig' does not exist in the current context
body: <p>there are three files in my solution which I think I referencing but I am stuck with these 3 errors</p>
  
  <p>Global.asax.cs name 'RouteConfig' does not exist in the current context</p>
  
  <p>What am I missing ? thanks:)</p>
  
  <p><img src="https://i.stack.imgur.com/Ow1BN.jpg" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/fdOa6.jpg" alt="enter image description here"></p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Web;
  using System.Web.Security;
  using System.Web.SessionState;
  using System.Web.Http;
  
  
  namespace PingYourPackage.API.WebHost
  {
      public class Global : System.Web.HttpApplication
      {
  
          protected void Application_Start(object sender, EventArgs e)
          {
              var config = GlobalConfiguration.Configuration;
  
  
              RouteConfig.RegisterRoutes(config);
              WebAPIConfig.Configure(config);
              AutofacWebAPI.Initialize(config);
          }
  
  ***************
  </code></pre>
  
  <p>here is the class autofac</p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using System.Web.Http;
  using Autofac;
  using Autofac.Integration.WebApi;
  using System.Reflection;
  
  
  namespace PingYourPackage.Config
  {
      public class AutofacWebAPI
      {
          public static void Initialize(HttpConfiguration config)
          {
              Initialize(config,
                  RegisterServices(new ContainerBuilder()));
          }
  
          public static void Initialize (
              HttpConfiguration config, IContainer container)
          {
              config.DependencyResolver =
                  new AutofacWebApiDependencyResolver(container);
          }
  
          private static IContainer RegisterServices(ContainerBuilder builder)
          {
              builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
  
              // registeration goes here
  
              return builder.Build();
          }
      }
  }
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/R5t18.jpg" alt="enter image description here"></p>