ignore_routes.cs

routes.IgnoreRoute("{*staticfile}", new { staticfile = @".*\.(css|js|txt|png|gif|jpg|jpeg|bmp)(/.*)?" });
routes.IgnoreRoute("{*staticfile}", new { staticfile = ".*\\.(?i)(css|js|xml|txt|png|gif|jpg|jpeg|bmp|ico|woff|svg|ttf|eot)(\\/.*)?" });


  var error = Server.GetLastError(); //filterContext.Exception
  var exception = error as HttpException ?? new HttpException("Error", error);
  
  if (exception.GetHttpCode() == 404)
    return;



routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.IgnoreRoute("{*staticfile}", new { staticfile = @".*\.(?i)(css|js|xml|txt|png|gif|jpg|jpeg|bmp|ico|woff|svg|ttf|eot)(/.*)?" });
routes.IgnoreRoute("Content/{*pathInfo}");
routes.IgnoreRoute("Scripts/{*pathInfo}");
routes.IgnoreRoute("Bundles/{*pathInfo}");