Global.asax with route tables for url rewriting

global.asax

<%@ Application Language="C#" %>
<%@ Import Namespace="System.Web.Routing" %>
<script RunAt="server">

/// <summary>
/// Add routes to application
/// </summary>
void RegisterRoutes(RouteCollection routes)
{
        #region Rotas amigáveis
        //routes.MapPageRoute("nome_da_rota", "url_amigavel", "~/caminho_do_aspx");
        routes.MapPageRoute("TiraDuvidas/Ranking", "TiraDuvidas/Ranking", "~/TiraDuvidas/Ranking/ProcessRanking.aspx");
        routes.MapPageRoute("TiraDuvidas/MaisPopulares", "TiraDuvidas/MaisPopulares", "~/TiraDuvidas/Default.aspx", false, new RouteValueDictionary { { "parameter", "1" } }, null);
        routes.MapPageRoute("{QuestionId}/{QuestionCategoryId}/TiraDuvidas/{QuestionCategoryName}/{QuestionName}", "{QuestionId}/{QuestionCategoryId}/TiraDuvidas/{QuestionCategoryName}/{QuestionName}", "~/TiraDuvidas/View.aspx", false, null, new RouteValueDictionary { { "QuestionCategoryId", @"\d+" }, { "QuestionId", @"\d+" } });
        #endregion
}

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

 void Application_End(object sender, EventArgs e)
    {
        //  Code that runs on application shutdown

    }

    void Application_Error(object sender, EventArgs e)
    {
        // Code that runs when an unhandled error occurs

    }

    void Session_Start(object sender, EventArgs e)
    {
        // Code that runs when a new session is started

    }

    void Session_End(object sender, EventArgs e)
    {
        // Code that runs when a session ends. 
        // Note: The Session_End event is raised only when the sessionstate mode
        // is set to InProc in the Web.config file. If session mode is set to StateServer 
        // or SQLServer, the event is not raised.

    }
       
</script>