Question

我有一个XML文件，如下所示：

<catalog>
  <cd Id="2">
    <title>Title2</title>
    <artist>artist2</artist>
    <company>
      <companyName>Company2</companyName>
      <companyAddress1>street1</companyAddress1>
      <companyAddress2>street2</companyAddress2>
      <companyCity>City2</companyCity>
    </company>
    <price>12.90</price>
    <year>1987</year>
  </cd>
  <cd Id="3">
    <title>Title3</title>
    <artist>artist3</artist>
    <company>
      <companyName>Company3</companyName>
      <companyAddress1>street1</companyAddress1>
      <companyAddress2>street2</companyAddress2>
      <companyCity>City3</companyCity>
    </company>
    <price>9.90</price>
    <year>1984</year>
  </cd>
</catalog>

我想根据节点中的Id属性过滤此源XML，并创建一个新的XML文件，如：

<catalog>
  <cd Id="2">
    <title>Title2</title>
    <artist>artist2</artist>
    <company>
      <companyName>Company2</companyName>
    </company>
    <price>12.90</price>
  </cd>
  <cd Id="3">
    <title>Title3</title>
    <artist>artist3</artist>
    <company>
      <companyName>Company3</companyName>
    </company>
    <price>9.90</price>
  </cd>
</catalog>

源文件太大了，所以我想我需要使用XmlReader。但我无法找到一种基于Id过滤的简单方法并提取所需的节点。任何帮助表示赞赏。

由于

Answer 1

我认为这正是你想要的：

XDocument xdoc = XDocument.Load("File path");//Load XML file

//Delete all elements in company except companyName
xdoc.Descendants("company").Elements().Where(x => x.Name != "companyName").Remove();

//Delete year
xdoc.Descendants("year").Remove();

xdoc.Save("File path");//Overwrite the XML file with the new result

从XML中提取特定节点

1 个答案: