protected void SetSelectedMenu(List <MenuInfo> menuList, int level)
 {
     if (this.Page is IMenuPage)
     {
         IMenuPage page = this.Page as IMenuPage;
         foreach (MenuInfo menu in menuList)
         {
             bool selected = false;
             if (level == 1)
             {
                 selected = menu.Id.Equals(page.GetTopMenuId(), StringComparison.OrdinalIgnoreCase);
             }
             else if (level == 2)
             {
                 selected = menu.Id.Equals(page.GetSecondMenuId(), StringComparison.OrdinalIgnoreCase);
             }
             menu.CssName = selected ? "Selected" : "UnSelected";
         }
     }
 }