[英]Read from xml file to objectlist using Linq
I have been trying to understand how to work with xml-files using linq. 我一直试图了解如何使用linq处理xml文件。
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<podcasts>
<podcast>
<url>http://...</url>
<name>blablabla</name>
<frequency>20 min</frequency>
<category>Drama</category>
<episodes>
<episode>
<name>blablabla</name>
<description>blablabla...</description>
</episode>
<episode>
<name>blablabla</name>
<description>blablabla...</description>
</episode>
</episodes>
</podcast>
<podcast>
<url>http://...</url>
<name>blablabla</name>
<frequency>20 min</frequency>
<category>Drama</category>
<episodes>
<episode>
<name>blablabla</name>
<description>blablabla...</description>
</episode>
<episode>
<name>blablabla</name>
<description>blablabla...</description>
</episode>
</episodes>
</podcast>
</podcasts>
The problem is that i can retrive the podcast-info, but not the episodes to that podcast. 问题是我可以检索播客信息,但不能播放该播客的剧集。 The podcastlist gets the podcast-info, but the episodelist in the podcast object dont get the episod-info.
播客列表获取播客信息,但播客对象中的剧集没有获得episod-info。 When i debug it says that episodelist is null..
当我调试它说episodelist是null ..
And the Podcast and Episode class looks like this Podcast和Episode类看起来像这样
public class Podcast
{
public string Url { get; set; }
public string EpisodesQuantity { get; set; }
public string Name { get; set; }
public string Frequency { get; set; }
public string Category { get; set; }
public List<Episode> episodeList { get; set; }
}
public class Episode
{
public string Name { get; set; }
public string Desc { get; set; }
public string Link { get; set; }
}
Im really stuck here, do u guys know what i'm doing wrong? 我真的被困在这里,你们知道我做错了吗? :(
:(
This should be right. 这应该是正确的。 I have similiar thing, just edited to fit your need.
我有类似的东西,只是编辑,以满足您的需要。 I quess I you will get oriented in that.
我觉得我会在那里得到导向。
episodeList = (from e in p.Element("episodes").Elements("episode")
select new Episode
{
Name = e.Element("name").Value,
Desc = e.Element("description").Value
}).ToList()
I have code loading very complex XML. 我有代码加载非常复杂的XML。 So you can see the logic.
所以你可以看到逻辑。 Get a look.
看看。
public static EdiFile read(XElement xmlDoc)
{
return new EdiFile
{
SPPLR_MAILBOX = xmlDoc.Element("SPPLR_MAILBOX").Value,
MESSAGE_ID = xmlDoc.Element("MESSAGE_ID").Value,
ASN_NO = xmlDoc.Element("ASN_NO").Value,
MESSAGE_SEND_DATE = xmlDoc.Element("MESSAGE_SEND_DATE").Value,
ETD = xmlDoc.Element("ETD").Value,
ETA = xmlDoc.Element("ETA").Value,
INVOICE_NUM = xmlDoc.Element("INVOICE_NUM").Value,
SPPLR_CD = xmlDoc.Element("SPPLR_CD").Value,
SPPLR_CONTACT = xmlDoc.Element("SPPLR_CONTACT").Value,
DELIVERY_PARTY_CD = xmlDoc.Element("DELIVERY_PARTY_CD").Value,
DELIVERY_TO_PLACE = xmlDoc.Element("DELIVERY_TO_PLACE").Value,
DELIVERY_FROM_PLACE = xmlDoc.Element("DELIVERY_FROM_PLACE").Value,
SHIPPING_TYPE = xmlDoc.Element("SHIPPING_TYPE").Value,
FREIGHT_TERMS = xmlDoc.Element("FREIGHT_TERMS").Value,
TRUCK_CONTACT = xmlDoc.Element("TRUCK_CONTACT").Value,
TRUCK_LICENCE_NUM = xmlDoc.Element("TRUCK_LICENCE_NUM").Value,
CREATED_BY = xmlDoc.Element("CREATED_BY").Value,
CREATED_DATE = xmlDoc.Element("CREATED_DATE").Value,
ATTRIBUTE01 = xmlDoc.Element("ATTRIBUTE01").Value,
ATTRIBUTE02 = xmlDoc.Element("ATTRIBUTE02").Value,
ATTRIBUTE03 = xmlDoc.Element("ATTRIBUTE03").Value,
ATTRIBUTE04 = xmlDoc.Element("ATTRIBUTE04").Value,
ATTRIBUTE05 = xmlDoc.Element("ATTRIBUTE05").Value,
Levels0 = (from a in xmlDoc.Element("LEVELS0").Elements("LEVEL0")
select new Level0
{
PLT_NUM = a.Element("PLT_NUM").Value,
PLT_LABEL_ID = a.Element("PLT_LABEL_ID").Value,
BOX_COUNT = a.Element("BOX_QTY").Value,
PLT_WEIGHT = a.Element("PLT_WEIGTH").Value,
PLT_DIMENSION = a.Element("PLT_DIMENSION").Value,
PLT_CHEM = a.Element("PLT_CHEM").Value,
PLT_NOT_STACK = a.Element("PLT_NOT_STACK").Value,
PLT_NOTE = a.Element("PLT_NOTE").Value,
ATTRIBUTE01 = a.Element("ATTRIBUTE01").Value,
ATTRIBUTE02 = a.Element("ATTRIBUTE02").Value,
ATTRIBUTE03 = a.Element("ATTRIBUTE03").Value,
ATTRIBUTE04 = a.Element("ATTRIBUTE04").Value,
ATTRIBUTE05 = a.Element("ATTRIBUTE05").Value,
Levels1 = (from b in a.Element("LEVELS1").Elements("LEVEL1")
select new Level1
{
BOX_NUM = b.Element("BOX_NUM").Value,
BOX_LABEL_ID = b.Element("BOX_LABEL_ID").Value,
Items = (from c in b.Element("ITEMS").Elements("ITEM")
select new Item
{
SPPLR_ITEM = c.Element("SPPLR_ITEM").Value,
CUST_ITEM = c.Element("CUST_ITEM").Value,
PO_NO = c.Element("PO_NO").Value,
PO_REF = c.Element("PO_REF").Value,
COUNTRY_OF_ORIGIN = c.Element("COUNTRY_OF_ORIGIN").Value,
BATCH_NO = c.Element("BATCH_NO").Value,
MLS_CLASS = c.Element("MLS_CLASS").Value,
ATTRIBUTE01 = c.Element("ATTRIBUTE01").Value,
ATTRIBUTE02 = c.Element("ATTRIBUTE02").Value,
ATTRIBUTE03 = c.Element("ATTRIBUTE03").Value,
ATTRIBUTE04 = c.Element("ATTRIBUTE04").Value,
ATTRIBUTE05 = c.Element("ATTRIBUTE05").Value,
Lots = (from d in c.Element("LOTS").Elements("LOT")
select new Lot
{
LOT_NUM = d.Element("LOT_NUM").Value,
LOT_LABEL_ID = d.Element("LOT_LABEL_ID").Value,
LOT_NOTE = d.Element("LOT_NOTE").Value,
LOT_EXP_DATE = d.Element("LOT_EXP_DATE").Value,
QTY = d.Element("QTY").Value,
UOM = d.Element("UOM").Value,
ATTRIBUTE01 = d.Element("ATTRIBUTE01").Value,
ATTRIBUTE02 = d.Element("ATTRIBUTE02").Value,
ATTRIBUTE03 = d.Element("ATTRIBUTE03").Value,
ATTRIBUTE04 = d.Element("ATTRIBUTE04").Value,
ATTRIBUTE05 = d.Element("ATTRIBUTE05").Value
}).ToList()
}).ToList()
}).ToList()
}).ToList()
};
}
Thats just if you were curios, you can see clearly how it works in my example here. 多数民众赞成,如果你是古玩,你可以清楚地看到它在我的例子中是如何工作的。
use this 用这个
episodeList = p.Element("episodes").Elements("episode")
.Select(e => new Episode
{
Name = e.Element("name").Value,
Desc = e.Element("description").Value
}).ToList()
and note that you have a typo here e.Element("desription")
(sould be "description") 并注意你在这里有一个拼写错误
e.Element("desription")
(可能是“描述”)
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