xml解析多个结点方法（C#）

xml version="1.0" encoding="utf-8"?>

response>
  flag>successflag>
  code>1code>
  message>成功单数：1 失败单数：0message>
  items>
    item>
      wareCode>ABCwareCode>
      itemCode>1000100itemCode>
      itemId>11111236itemId>
      inventoryType>ZPinventoryType>
      quantity>235quantity>
      lockQuantity>0lockQuantity>
    item>
  items>
response>

var strResponse = from itemResponse in xDoc.Descendants("response")
                              select itemResponse;
　　　　　　　　
            foreach (var items in strResponse)
            {
                string status = items.Element("flag").Value;

                if (status == "success")
                {
                    var itemResponse = from itemQuantity in xDoc.Descendants("item")
                                       select itemQuantity;

                    foreach (var item in itemResponse)
                    {
                        obj.PRODUCT_UPC = item.Element("itemCode").Value;
                        obj.PRODUCT_KD_PRODCODE = item.Element("itemId").Value;

                        obj.QUANTITY = Convert.ToInt64(item.Element("quantity").Value);
                        obj.PRODUCT_ID = prod_kd.PRODUCT_ID;
                        obj.LOCKQUANTITY = Convert.ToInt64(item.Element("lockQuantity").Value);
                        obj.PRODUCT_CODE = prod_kd.PRODUCT_CODE;
                        obj.PRODUCT_NAME = prod_kd.PRODUCT_NAME;
                    }
                }
            }