url userfreindly but the target page is not loaded

public class Global : System.Web.HttpApplication
   {


       protected void Application_Start(object sender, EventArgs e)
       {
            RouteTable.Routes.MapPageRoute("StoreRoute",
            "{Name}",
            "~/index1.aspx");
       }

       protected void Session_Start(object sender, EventArgs e)
       {

       }

       protected void Application_BeginRequest(object sender, EventArgs e)
       {
           string mTemp;
           string murl;
           try
           {
               string initialurl = Request.Url.ToString();

               mTemp = initialurl.Substring(1, initialurl.LastIndexOf(".")-1);
               //murl = mTemp.Substring(1, mTemp.LastIndexOf(".aspx"));
               Context.RewritePath(mTemp);
            
           }
           catch (Exception ex)
           {
               ex.Message.ToString();
               
           }
       }

       protected void Application_AuthenticateRequest(object sender, EventArgs e)
       {
       }

       protected void Application_Error(object sender, EventArgs e)
       {
       }

       protected void Session_End(object sender, EventArgs e)
       {
       }

       protected void Application_End(object sender, EventArgs e)
       {
       }
   }

index1.cs

 public partial class index1 : System.Web.UI.Page
    {
        static string var = null;
        string getLoc = null;
        string strURL;//this line for url freindly 
        protected void Page_Load(object sender, EventArgs e)
        {
            string name = Page.RouteData.Values["Name"] as string;
            if (!IsPostBack)
            {
                halim();
                
            }

        }

        protected void halim()
        {
        HttpContext context = Context;
        string strURL, strURL1;
        string name = Page.RouteData.Values["Name"] as string;
        if (name != null)
        {
          if (name == "Aboutus")
            {
                strURL = "/Aboutus.aspx";
                HttpContext.Current.RewritePath("~" + strURL);//Substring(0, mTemp.LastIndexOf(".aspx")));
                
            }
            else if (name == "contactus")
            {
                strURL = "/contactus.aspx";
                Response.Redirect(strURL);
                HttpContext.Current.RewritePath("~" + strURL);
            }
        }
       }