public static XmlElement[] FuzzyFindNode(string xmlPath, string key, string value=null){XmlDocument xmlDoc = new XmlDocument();xmlDoc.Load(xmlPath); string xpath = $"//节点名字[contains(@{key},'{value}')]"; XmlNodeList nodes = xmlDoc.SelectNodes(xpath); XmlElement[] eles = nodes.Cast<XmlElement>().ToArray();return eles;}示例：
<bookstore><book category="cooking"><title lang="en">Everyday Italian</title><author>Giada De Laurentiis</author><year>2005</year><price>30.00</price></book><book category="children"><title lang="en">Harry Potter</title><author>J.K. Rowling</author><year>2005</year><price>29.99</price></book><book category="web"><title lang="en">XQuery Kick Start</title><author>James McGovern</author><year>2003</year><price>49.99</price></book><book category="web"><title lang="en">Learning XML</title><author>Erik T. Ray</author><year>2003</year><price>39.95</price></book>
</bookstore>doc.Load("books.xml");
XmlNodeList nodes = doc.SelectNodes("//book[contains(title, 'Harry')]");
nodes就是模糊查找结果
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