在 XML 中查找一个节点下的值 [英] Find values under one node in XML
本文介绍了在 XML 中查找一个节点下的值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
下面是要搜索的词的xml文件格式.
Below is xml file format from which words to be searched.
<Book>
<Page id="1">
<Head>Preface</Head>
<Body>
<Paragraph>
<Line>
<Word>
<Char>T</Char>
<Char>h</Char>
<Char>i</Char>
<Char>s</Char>
</Word>
<Word>
<Char>-</Char>
</Word>
<Word>
<Char>i</Char>
<Char>s</Char>
</Word>
<Word>
<Char>-</Char>
</Word>
<Word>
<Char>s</Char>
<Char>a</Char>
<Char>m</Char>
<Char>p</Char>
<Char>l</Char>
<Char>e</Char>
</Word>
<Word>
<Char>-</Char>
</Word>
<Word>
<Char>t</Char>
<Char>e</Char>
<Char>x</Char>
<Char>t</Char>
</Word>
</Line>
</Paragraph>
</Body>
</Page>
我在 C# 中使用了以下 XPath 表达式来查找 Char 节点的值.
I used the below XPath expressions in C# to find values of Char Node.
XmlDocument objXmlDoc = new XmlDocument();
XmlNodeList objXmlNodeList;
objXmlDoc.Load(sFilePath);
objXmlNodeList = objXmlDoc.SelectNodes("//CHAR[translate(text(),'abcdefghijklmnopqrstuvwxyz','ABCDEFGHIJKLMNOPQRSTUVWXYZ')='" + txtFindText.Text.ToUpper() + "']");
这里,如何从上面的 XML 文件中使用 XPath 获取完整的单词?
Here, how to get a complete word with XPath from above XML File ?
推荐答案
理论上是不可能的.原因是 XML/XPATH 不能确保顺序,因为查询的结果是一个节点集",根据定义,它是无重复节点的无序集合".
It is not possible theoretically. The reason is that XML/XPATH does not ensure order as the result of a query is a "node-set" which by definition is "an unordered collection of nodes without duplicates".
尽管如此,您还是可以接近要求.比如你可以得到第一个词:
Nevertheless, you can get close to the requirement. For example, you can get the first word:
XmlDocument objXmlDoc = new XmlDocument();
XmlNodeList objXmlNodeList;
objXmlDoc.Load(sFilePath);
objXmlNodeList = objXmlDoc.SelectNodes("//Word");
string s = string.Empty;
XmlNodeList wordNodes = objXmlNodeList[0].ChildNodes;
foreach (XmlNode characterNode in wordNodes)
{
s = s + characterNode.InnerText;
}
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