Can I hide/show asp:Menu items based on role?

To remove a MenuItem from an ASP.net NavigationMenu by Value:

public static void RemoveMenuItemByValue(MenuItemCollection items, String value)
{
   MenuItem itemToRemove = null;

   //Breadth first, look in the collection
   foreach (MenuItem item in items)
   {
      if (item.Value == value)
      {
          itemToRemove = item;
          break;
      }
   }

   if (itemToRemove != null)
   {
      items.Remove(itemToRemove);
      return;
   }


   //Search children
   foreach (MenuItem item in items)
   {
       RemoveMenuItemByValue(item.ChildItems, value);
   }
}

and helper extension:

public static RemoveMenuItemByValue(this NavigationMenu menu, String value)
{
   RemoveMenuItemByValue(menu.Items, value);
}

and sample usage:

navigationMenu.RemoveMenuItemByValue("UnitTests");

Note: Any code is released into the public domain. No attribution required.