public static OrderStateCollection getAllOrderstates()

class MyPage : System.Web.UI.Page
{
   public void RenderAllOrderStates( Rendering.Template t )
   {
      OrderStateCollection orderStates = OrderState.getAllOrderstates( );
      foreach( Orderstate os in orderStates)
      {
          template.SetTag("Ecom:Order:Orderstate.Name", os.Name);
          template.SetTag("Ecom:Order:Orderstate.Description", os.Description);
      }
   }
}