c# - 如果子节点元素相等，如何添加父节点？

Question

我有非常大的 xml 数据集。所以在 "SECTION" 包含 "Piece" 节点并且它们对于 "SECTION name="RF1WB-1" 具有相等的值，SECTION name="RF1WB-2", SECTION name="RF1WB-3"。所以我想添加"Parent"作为它们的父节点如果 “Piece” 标记包含与第二个 XML 中所示相同的值。

如果子节点元素包含相同的值，如何添加父节点？

XmlDocument doc = new XmlDocument();
doc.Load("..\\MFAB1.xml");        
XmlNodeList xnList = doc.SelectNodes("MFAB.ini/SECTION");
foreach (XmlNode xn in xnList)
{
    if (xn.HasChildNodes)
    {
        foreach (XmlNode item in xn.SelectNodes("Piece"))
        {
            if (xn.ChildNodes[0].InnerText.ToString().Contains(s3))
            {
                d1.Piece = xn.ChildNodes[0].InnerText.ToString();
            }
            ______________
            ______________
            ______________
        }
    }
}

---

输入文件:

<?xml version="1.0" encoding="UTF-8"?>
<MFAB.ini>
 <SECTION name="RF1WB-1">
    <Piece>
      RF1-1
    </Piece>
</SECTION>
  <SECTION name="RF1WB-2">
    <Piece>
      RF1-1
    </Piece>
</SECTION>
  <SECTION name="RF1WB-3">
    <Piece>
      RF1-1
    </Piece>
  </SECTION>
  <SECTION name="RF1-2WB-1">
    <Piece>
      RF1-2
    </Piece>
 </SECTION>
  <SECTION name="RF1-2WB-2">
    <Piece>
      RF1-2
    </Piece>
 </SECTION>
</MFAB.ini>

---

预期输出文件:

我需要的是:

<?xml version="1.0" encoding="UTF-8"?>
<MFAB.ini>
<Parent name = "RF1-1">
 <SECTION name="RF1-1WB-1">
    <Piece>
      RF1-1
    </Piece>
</SECTION>
  <SECTION name="RF1-1WB-2">
    <Piece>
      RF1-1
    </Piece>
</SECTION>
  <SECTION name="RF1-1WB-3">
    <Piece>
      RF1-1
    </Piece>
  </SECTION>
</Parent>
<Parent name = "RF1-2">
  <SECTION name="RF1-2WB-1">
    <Piece>
      RF1-2
    </Piece>
 </SECTION>
  <SECTION name="RF1-2WB-2">
    <Piece>
      RF1-2
    </Piece>
 </SECTION>
</Parent>
</MFAB.ini>

Answer 1

您可以按 <Piece> 对元素进行分组标记，然后将它们作为 <Parent> 的子项这样标记:

var xml = XDocument.Load(@"input file");

var result = new XElement(xml.Root.Name, xml.Root.Attributes().ToArray(),
    xml.Root.Elements().GroupBy(x => x.Element("Piece").Value.Trim()).Select(x =>
        new XElement("Parent", new XAttribute("name", x.Key), x))
    );

result.Save(@"output file");