ASP.NET Routing: Missing RouteCollection Class

Question

I am developing a website (web forms, not MVC) in VS 2008 (SP1). I am trying to enable ASP.NET Routing. I am following the MSDN tutorial to do this. http://msdn.microsoft.com/en-us/library/cc668201.aspx I added the following elements to the glbal.asax.cs file according to the tutorial

 protected void Application_Start(object sender, EventArgs e)
 {
        RegisterRoutes(RouteTable.Routes);

 }   

 public static void RegisterRoutes(RouteCollection routes)
 {

        routes.Add(new Route
        (
             "Category/{action}/{categoryName}"
             , new CategoryRouteHandler()
        ));
  }

When you try to create this, it says that "The type or name of the namespace" RouteCollection "could not be found (did you specify a usage directive or assembly reference?)

I have System.web imported into my global.asax file

Any idea how to get rid of it?

Answer 1

System.Web.Routing.