根据节点ID从xml文件检索数据 [英] retrive data from xml file based on node id

问题描述

<?xml version="1.0" encoding="utf-8"?>
<DataDownload>
  <ClusterId id="00 15">
    <attrib>00 00</attrib>
    <attrib>01 00</attrib>
    <attrib>02 00</attrib>
    <attrib>03 00</attrib>
  </ClusterId>
  <ClusterId id="00 00">
    <attrib>00 00</attrib>
    <attrib>04 00</attrib>
    <attrib>05 00</attrib>
    <attrib>07 00</attrib>
  </ClusterId>
  <ClusterId id="07 02">
   <attrib>00 00</attrib>
    <attrib>00 02</attrib>
    <attrib>00 03</attrib>
    <attrib>03 03</attrib>
    <attrib>06 03</attrib>
  </ClusterId>
</DataDownload >

这是我的xml文件
我想根据集群ID节点ID来重新分配属性值.

例如，如果00 15 id表示

This is my xml file
i want to retieve attrib values based on cluster ID node id.

example if 00 15 id means
its childnodes values i need.

推荐答案

您可以使用XPath查询根据ID定位元素.例如:

You can use a XPath query to locate the element based on the id. For example something like:

System.Xml.XmlDocument xmlDoc = new System.Xml.XmlDocument();

         xmlDoc.LoadXml(@"
<DataDownload>
  <ClusterId id=""00 15"">
    <attrib>00 00</attrib>
    <attrib>01 00</attrib>
    <attrib>02 00</attrib>
    <attrib>03 00</attrib>
  </ClusterId>
  <ClusterId id=""00 00"">
    <attrib>00 00</attrib>
    <attrib>04 00</attrib>
    <attrib>05 00</attrib>
    <attrib>07 00</attrib>
  </ClusterId>
  <ClusterId id=""07 02"">
   <attrib>00 00</attrib>
    <attrib>00 02</attrib>
    <attrib>00 03</attrib>
    <attrib>03 03</attrib>
    <attrib>06 03</attrib>
  </ClusterId>
</DataDownload >");

         System.Xml.XmlNodeList result = xmlDoc.SelectNodes("//ClusterId[@id='00 15']");

         if (result.Count > 0) {
            // Here you go through the child nodes of the first result (result[0])
         }

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