运用asp.net4.0的url路由后，能否禁止直接访问真实的aspx文件

public class MyHttpModule:IHttpModule    {        #region IHttpModule 成员        public void Dispose()        {                   }        public void Init(HttpApplication context)        {            context.BeginRequest += Application_BeginRequest;                    }        private void Application_BeginRequest(object sender, EventArgs e)        {            HttpApplication application = (HttpApplication)sender;            HttpContext context = application.Context;            string url = context.Request.RawUrl;            if (!context.Request.RawUrl.Contains(".aspx"))            {                //你想要的操作            }            context.RewritePath(url);        }          #endregion    }