具体如下：

XML文件：文件在MyDocument文件夹下


	复制代码 代码如下:

	

	<?xml version="1.0" encoding="utf-8"?>

	<PersonF xmlns="" Name="(test)work hard work smart!">

	<person Name="Person1">

	<ID>1</ID>

	<Name>XiaoA</Name>

	<Age>59</Age>

	</person>

	<person Name="Person2">

	<ID>2</ID>

	<Name>XiaoB</Name>

	<Age>29</Age>

	</person>

	<person Name="Person3">

	<ID>3</ID>

	<Name>XiaoC</Name>

	<Age>103</Age>

	</person>

	<person Name="Person4">

	<ID>4</ID>

	<Name>XiaoD</Name>

	<Age>59</Age>

	</person>

	</PersonF>


Code：说明都在注释里。


	复制代码 代码如下:

	

	void TestXML()

	{

	XmlDocument doc = new XmlDocument();

	string path = "http://www.jb51.net/MyDocument/Person.xml";

	try

	{

	doc.Load(path);

	//1、读取单个节点的数据

	XmlNode node = doc.SelectSingleNode("PersonF");

	//2、读取多个节点的数据

	XmlNodeList nodeList1 = doc.SelectNodes("PersonF/person");

	//3.1 读取具体节点的具体值 如：属性为Person2的第二个节点Name的InnerText

	XmlNodeList nodeList = doc.DocumentElement.GetElementsByTagName("person");

	foreach (XmlNode node2 in nodeList1) //当然也能用nodeList的值

	{

	if (node2.Attributes["Name"].InnerText == "Person2")

	{

	Console.WriteLine(node2.ChildNodes[1].InnerText);

	}

	}

	//3.2 读取ID为2所在的节点第二个子节点Name的InnerText

	XmlNode node3 = doc.SelectSingleNode("PersonF/person[ID=2]");

	string strNode3 = node3.ChildNodes[1].InnerText;

	//3.3利用下面的方法可以找到ID为2的节点

	XmlNodeList nodeList2 = doc.SelectNodes("//person//ID");

	XmlNode node4 = null;

	foreach (XmlNode node5 in nodeList2)

	{

	if (node5.InnerText == "2")

	{

	node4 = node5;

	break;

	}

	}

	Console.WriteLine(node4.InnerText);

	//4、读取节点的属性

	string Name = node.Attributes["Name"].InnerText;

	//5 修改节点的属性

	node.Attributes["Name"].InnerText = "work hard work smart!";

	doc.Save(path);

	//6 添加自定义的节点

	XmlTextReader reader = new XmlTextReader(path);

	XmlElement root = doc.DocumentElement;//获取根节点

	XmlElement tagOuter = doc.CreateElement("person");

	XmlElement tagIN = doc.CreateElement("Name");

	tagIN.InnerText = "work hard work smart!";

	tagOuter.AppendChild(tagIN);

	root.AppendChild(tagOuter);//添加tagOuter到XML文件的最后

	reader.Close();

	doc.Save(path);

	}

	catch (System.Exception e)

	{

	throw new Exception(e.Message);

	}

	}