How to close buy or sell pending orders

Hello I need help closing buy or sell pending orders , I know there's 3 types of pending orders but I'm struggling on how to tell which pending order is a buy or sell to close them.

private void Close(TradeType tradeType)
        {
            foreach (var position in Positions.FindAll(null, SymbolName, tradeType))
                ClosePosition(position);
                
              foreach (var order in PendingOrders)
             {
                 if(order.OrderType == PendingOrderType.Limit)
                     CancelPendingOrder(order);
                  
                 if(order.OrderType == PendingOrderType.Stop)
                     CancelPendingOrder(order);
                     
                  if(order.OrderType == PendingOrderType.StopLimit)
                     CancelPendingOrder(order);
                     
             }
            
        }