XML操作求助 - Linq to xml 不熟

tabz

[XML] 纯文本查看 复制代码

<?xml version="1.0" encoding="utf-8"?>
<PathList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Path>
    <PathName>PM_CableLoss</PathName>
    <PathID>1</PathID>
    <AdditionalLoss>0</AdditionalLoss>
    <Cal_Date>4/7/2010 3:58 PM</Cal_Date>
    <TesterID>TesterA</TesterID>
    <CalCable_PathName>CAL_CABLE</CalCable_PathName>
    <UseCalCable>true</UseCalCable>
    <DataList>
      <Data>
        <Frequency>2412</Frequency>
        <Value>10.7</Value>
        <Delta>0.0</Delta>
      </Data>
      <Data>
        <Frequency>2417</Frequency>
        <Value>10.7</Value>
        <Delta>0.0</Delta>
      </Data>
      <Data>
        <Frequency>2422</Frequency>
        <Value>10.8</Value>
        <Delta>0.0</Delta>
      </Data>
      <Data>
        <Frequency>2427</Frequency>
        <Value>10.9</Value>
        <Delta>0.0</Delta>
      </Data>
    </DataList>
  </Path>
  <Path>
    <PathName>Test_CableLoss</PathName>
    <PathID>2</PathID>
    <AdditionalLoss>0</AdditionalLoss>
    <Cal_Date>4/7/2010 3:58 PM</Cal_Date>
    <TesterID>TesterB</TesterID>
    <CalCable_PathName>CAL_CABLE</CalCable_PathName>
    <UseCalCable>true</UseCalCable>
    <DataList>
      <Data>
        <Frequency>2412</Frequency>
        <Value>0</Value>
        <Delta>0.0</Delta>
      </Data>
      <Data>
        <Frequency>2417</Frequency>
        <Value>0</Value>
        <Delta>0.0</Delta>
      </Data>
      <Data>
        <Frequency>2422</Frequency>
        <Value>0</Value>
        <Delta>0.0</Delta>
      </Data>
      <Data>
        <Frequency>2427</Frequency>
        <Value>0</Value>
        <Delta>0.0</Delta>
      </Data>
      <Data>
        <Frequency>2432</Frequency>
        <Value>0</Value>
        <Delta>0.0</Delta>
      </Data>
    </DataList>
  </Path>
</PathList>

上面是要操作的XML，下面是我自己的代码。

[C#] 纯文本查看 复制代码

XmlDocument xml = new XmlDocument();
xml.Load("loss.xml");

XmlNodeList xnl = xml.SelectNodes("/PathList/Path/DataList/Data");
foreach (XmlNode x in xnl)
{
    string firstName = x["Frequency"].InnerText;
    string lastName = x["Value"].InnerText;
    Console.WriteLine("{0}\t {1}", firstName, lastName);
}

问题是我不想一次遍历出所有结果，我想按 <PathName>PM_CableLoss</PathName>这个字段分别遍历，知道有好的方法，但一直想不出，对Linq to xml也不熟，求大神相助，谢谢！