Question

我有一个xml：

<messageheaders startindex="0" count="3" totalcount="3" xmlns="http://api.esendex.com/ns/">
- <messageheader id="74dfea3e-a196-4ae0-9595-105c9f59cc01" uri="https://api.esendex.com/v1.0/messageheaders/74dfea3e-a196-4ae0-9595-105c9f59cc01">
  <reference>EX0196276</reference> 
  <status>Submitted</status> 
  <sentat>2016-03-03T08:01:32.97Z</sentat> 
  <laststatusat>2016-03-03T08:01:32.97Z</laststatusat> 
  <submittedat>2016-03-03T08:01:32.97Z</submittedat> 
  <receivedat>2016-03-03T08:01:32.97Z</receivedat> 
  <type>SMS</type> 
- <to>
  <phonenumber>34627176544</phonenumber> 
  </to>
- <from>
  <phonenumber>447908583018</phonenumber> 
  </from>
  <summary>837680710A4714672983100303090100640000000000000...</summary> 
  <body id="74dfea3e-a196-4ae0-9595-105c9f59cc01" uri="https://api.esendex.com/v1.0/messageheaders/74dfea3e-a196-4ae0-9595-105c9f59cc01/body" /> 
  <direction>Inbound</direction> 
  <parts>1</parts> 
  <readat>0001-01-01T00:00:00Z</readat> 
  </messageheader>
- <messageheader id="8e835eda-d6d7-46e4-ab44-4df20bd133a4" uri="https://api.esendex.com/v1.0/messageheaders/8e835eda-d6d7-46e4-ab44-4df20bd133a4">
  <reference>EX0196276</reference> 
  <status>Submitted</status> 
  <sentat>2016-03-03T07:00:30.957Z</sentat> 
  <laststatusat>2016-03-03T07:00:30.957Z</laststatusat> 
  <submittedat>2016-03-03T07:00:30.957Z</submittedat> 
  <receivedat>2016-03-03T07:00:30.957Z</receivedat> 
  <type>SMS</type> 
- <to>
  <phonenumber>34627176544</phonenumber> 
  </to>
- <from>
  <phonenumber>447944489977</phonenumber> 
  </from>
  <summary>B3EB80710A470F42A782100303080000640000000000000...</summary> 
  <body id="8e835eda-d6d7-46e4-ab44-4df20bd133a4" uri="https://api.esendex.com/v1.0/messageheaders/8e835eda-d6d7-46e4-ab44-4df20bd133a4/body" /> 
  <direction>Inbound</direction> 
  <parts>1</parts> 
  <readat>2016-03-03T07:08:19.963Z</readat> 
  <readby>andrej.dolar@iskra.eu</readby> 
  </messageheader>
- <messageheader id="f9fd0867-7659-4042-a1d6-edd8699b19b3" uri="https://api.esendex.com/v1.0/messageheaders/f9fd0867-7659-4042-a1d6-edd8699b19b3">
  <reference>EX0196276</reference> 
  <status>Submitted</status> 
  <sentat>2016-03-03T06:01:33.007Z</sentat> 
  <laststatusat>2016-03-03T06:01:33.007Z</laststatusat> 
  <submittedat>2016-03-03T06:01:33.007Z</submittedat> 
  <receivedat>2016-03-03T06:01:33.007Z</receivedat> 
  <type>SMS</type> 
- <to>
  <phonenumber>34627176544</phonenumber> 
  </to>
- <from>
  <phonenumber>447944489977</phonenumber> 
  </from>
  <summary>B3EA80710A470F42A780100303070100640000000000000...</summary> 
  <body id="f9fd0867-7659-4042-a1d6-edd8699b19b3" uri="https://api.esendex.com/v1.0/messageheaders/f9fd0867-7659-4042-a1d6-edd8699b19b3/body" /> 
  <direction>Inbound</direction> 
  <parts>1</parts> 
  <readat>2016-03-03T07:08:05.497Z</readat> 
  <readby>andrej.dolar@iskra.eu</readby> 
  </messageheader>
  </messageheaders>

如何从messageheaders中的每个messageheader获取汇总值？我在这里尝试了很多解决方案，但它不起作用。

XElement xml = XElement.Parse(response);

var result = xml
.Elements()
.Select(s => new
{
Summary = s.Element("summary").Value.ToString()
}).ToList();

此代码返回：类型＆＃39; System.NullReferenceException＆＃39;的未处理异常发生在X4SmsReceiver.dll

中

附加信息：未将对象引用设置为对象的实例。

感谢您的帮助！

Answer 1

XNamespace xns = "http://api.esendex.com/ns/";
        var data = xdoc.Element(xns + "messageheaders").Elements(xns+"messageheader").Select(x => new { Summary = x.Element(xns+"summary")}).ToList();

试试这个有效

Answer 2

您可以使用XSD.exe设计一类xml标记，然后通过反序列化可以获取数据。

使用Entity从XML中提取元素 - C＃

2 个答案: