我自己解决了这个问题



刚放好

i solved this by myself

just put

averageRate= item.Elements("RoomRateDetailsList").Elements("RoomRateDetails").Elements("RateInfos").Elements("RateInfo").Elements("ChargeableRateInfo").Attributes("averageRate").Take(1).Any()

如果averageRate将返回true属性可用，否则为假。



如果你想检索属性值，那就把

this will return true if averageRate attribute is available otherwise false.

and if you want to retrieve the attribute value then just put

total = item.Descendants("ChargeableRateInfo").Select(ele => (string)ele.Attribute("total").Value).FirstOrDefault()

享受coading ..........

enjoy coading..........