C# 对XML基本操作总结

<?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>

        public  void TestXML()
        {
            XmlDocument doc = new XmlDocument();
            string path = "http://www.cnblogs.com/MyDocument/Person.xml";
            try
            {

                //doc.Load(Server.MapPath()
                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");
                //设置节点属性
                tagOuter.SetAttribute("Name", "Person5");
                XmlElement tagIN_Name = doc.CreateElement("Name");
                XmlElement tagIN_ID = doc.CreateElement("ID");
                tagIN_Name.InnerText = "work hard work smart!";
                tagIN_ID.InnerText = "32";
                tagOuter.AppendChild(tagIN_Name);
                tagOuter.AppendChild(tagIN_ID);
                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);
            }
        }