title: Using AutoFac with ASP.Net WebForms
body: <p>I read the official documents, for example as follows:</p>
  
  <pre><code> public class Global : System.Web.HttpApplication
      {
          static IContainerProvider _containerProvider;
  
          public IContainerProvider ContainerProvider
          {
              get { return _containerProvider; }
          }
  
          protected void Application_Start(object sender, EventArgs e)
          {
              var builder = new ContainerBuilder();
              builder.RegisterType&lt;Foo&gt;().As&lt;IFoo&gt;().HttpRequestScoped();
  
              _containerProvider = new ContainerProvider(builder.Build());
          }
  </code></pre>
  
  <p>This is what I do in accordance with the official examples, but the problem is the method HttpRequestScoped does not exist, why is this?</p>
  
  <p>Also, I would like to ask how to obtain an instance of the interface and the Singleton Pattern in the page.</p>