Выбор узла через текстовое значение в XML (C#)

Question

Как выбрать узел < text:p text:style-name="P1">TEXT< /text:p> (третья строчка снизу) через текстовое значение TEXT? Цель - нужно скопировать весь этот узел, затем с помощью цикла вставить несколько других значений.

<?xml version="1.0" encoding="UTF-8"?> <office:document-content xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:rpt="http://openoffice.org/2005/report" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:css3t="http://www.w3.org/TR/css3-text/" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:officeooo="http://openoffice.org/2009/office" office:version="1.2">
    <office:scripts />
    <office:font-face-decls>
        <style:font-face style:name="Mangal1" svg:font-family="Mangal" />
        <style:font-face style:name="Liberation Serif" svg:font-family="'Liberation Serif'" style:font-family-generic="roman" style:font-pitch="variable" />
        <style:font-face style:name="Liberation Sans" svg:font-family="'Liberation Sans'" style:font-family-generic="swiss" style:font-pitch="variable" />
        <style:font-face style:name="Arial" svg:font-family="Arial" style:font-family-generic="system" style:font-pitch="variable" />
        <style:font-face style:name="Mangal" svg:font-family="Mangal" style:font-family-generic="system" style:font-pitch="variable" />
        <style:font-face style:name="Microsoft YaHei" svg:font-family="'Microsoft YaHei'" style:font-family-generic="system" style:font-pitch="variable" />
        <style:font-face style:name="NSimSun" svg:font-family="NSimSun" style:font-family-generic="system" style:font-pitch="variable" />
    </office:font-face-decls>
    <office:automatic-styles>
        <style:style style:name="P1" style:family="paragraph" style:parent-style-name="Standard">
            <style:text-properties officeooo:rsid="000044dc" officeooo:paragraph-rsid="000044dc" />
        </style:style>
    </office:automatic-styles>
    <office:body>
        <office:text>
            <text:sequence-decls>
                <text:sequence-decl text:display-outline-level="0" text:name="Illustration" />
                <text:sequence-decl text:display-outline-level="0" text:name="Table" />
                <text:sequence-decl text:display-outline-level="0" text:name="Text" />
                <text:sequence-decl text:display-outline-level="0" text:name="Drawing" />
                <text:sequence-decl text:display-outline-level="0" text:name="Figure" />
            </text:sequence-decls>
            <text:p text:style-name="P1">TEXT</text:p>
        </office:text>
    </office:body> </office:document-content>

Этот вариант не работает:

    XmlDocument xDoc = new XmlDocument();
    xDoc.Load("F://content.xml");
    XmlElement xRoot = xDoc.DocumentElement;


    XmlNode childnode = xRoot.SelectSingleNode("office[text='TEXT']");
    if (childnode != null)
        Console.WriteLine(childnode.OuterXml);

Answer 1

Лучше использовать LINQ to XML при работе с XML.

Нам необходимо учитывать пространства имен (namespaces) XML.

c#

void Main()
{
    const string fileName = @"e:\temp\content.xml";

    // загрузить документ XML
    XDocument xdoc = XDocument.Load(fileName);

    // получить оба пространства имен (namespaces)
    XNamespace ns1 = xdoc.Root.GetNamespaceOfPrefix("office");
    XNamespace ns2 = xdoc.Root.GetNamespaceOfPrefix("text");

    // добраться до нужного места
    IEnumerable<XElement> xelem = xdoc.Descendants(ns1 + "body")
        .Elements(ns1 + "text")
        .Elements(ns2 + "p")
.Where(x => x.Value.Equals("TEXT"));

    Console.WriteLine(xelem);
}

Результат

<text:p text:style-name="P1" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0">TEXT</text:p>

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Выбор узла через текстовое значение в XML (C#)

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