//初始化一个xml对象XmlDocument xml = new XmlDocument();//加载xml文件xml.Load("文件路径");//xml.LoadXml("字符串");//读取指定的节点XmlNode xmlNode = xml.SelectSingleNode("/节点名");//判断节点下是否有子节点xmlNode.HasChildNodes;//读取节点下的所有子节点XmlNodeList xmlNodeList = xmlNode.ChildNodes;//读取同名同级多个节点列表XmlNodeList xmlNodeList = xml.SelectNodes("/root/节点名");//读取节点的属性string attribute = xmlNode.Attributes["属性名"].Value;//读取节点的文本string value = xmlNode.InnerText;//创建一个新的节点XmlNode xmlNode = xml.CreateElement("节点名");//保存xml文件xml.Save("文件路径");

        //创建并初始化一个xml对象XmlDocument xml = new XmlDocument();//加载xml文件try{xml.Load(HttpContext.Current.Server.MapPath("~/datafunc/allmana.xml"));}catch (Exception){throw new ExceptionMsg(4, "加载xml文件失败！"); }//读取节点XmlNode snXmlNode = xml.SelectSingleNode("/Config/SystemName");SystemName = snXmlNode.InnerText;

[html] view plain copy print?在CODE上查看代码片派生到我的代码片
<?xml version="1.0" encoding="utf-8" ?>
<bookstore xmlns="http://www.lucernepublishing.com"  xml:base="http://www.semanticweb.org/ontologies/2012/2/OntologyMinePower.owl">  <book>  <title>C语言</title>  <author name ="XIAO">  <age>25</age>  </author>  <price>50</price>  </book>  <book>  <title>数据库</title>  <price>100</price >  </book >  <book>  <title>数据结构</title>  <age>100</age>  <author name ="Wang">  <age>25</age>  <sex>female</sex>  </author>  <price>66.5</price >  </book >
</bookstore>

protected void Button1_Click(object sender, EventArgs e)
{  Label1.Text = "";  XmlDocument doc = new XmlDocument();  string xmlPath = Server.MapPath("xml/xml3.xml");  doc.Load(xmlPath);  XmlElement root = doc.DocumentElement;  XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);  nsmgr.AddNamespace("ab", "http://www.lucernepublishing.com");  XmlNodeList listNodes = root.SelectNodes("/ab:bookstore/ab:book[ab:author[ab:sex]]/ab:price", nsmgr);  foreach (XmlNode node in listNodes)  {  Label1.Text += node.InnerText + "<br/>"; //显示66.5
    }
}  

//创建XDocument对象，并实例化对象XDocument xdoc = new XDocument(//xml的格化与编码new XDeclaration("1.0", "utf-8", "yes"),//创建元素new XElement("Config",//创建元素，并做上一元素的子元素    new XElement("System",//创建元素的属性new XAttribute("Name", "allmana"),new XElement("StoreName", "省妇幼店")),//创建同级元素new XElement("System",new XAttribute("Name", "allmana1"),new XElement("StoreName", "市妇幼店"))));//保存xml文件xdoc.Save(HttpContext.Current.Server.MapPath("~/DataConfig/Config.xml"));