c# 创建XML文档，解析XML文档

1.静态函数

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Xml;   namespace httpWebRequest {     //CreateXMLList     //<?xml version="1.0" encoding="utf-8"?>     //<root>     //  <parent>     //    <son>     //      <name>lady gaga</name>     //      <age>50</age>     //    </son>     //    <son>     //      <name>swift</name>     //      <age>42</age>     //    </son>     //  </parent>     //</root>       //CreateXML     //<?xml version="1.0" encoding="utf-8"?>     //<root>     //  <parent>     //    <son>     //      <name>swift</name>     //    </son>     //  </parent>     //</root>       public class OperateXML     {         public OperateXML() { }           /// <summary>         /// 创建含有大量子节点的         /// </summary>         public static void CreateXMLList(string parentName, string SonName, List<Dictionary<string, string>> XmlNodeInfoList)         {             XmlDocument myXml = new XmlDocument();             //创建声明             XmlDeclaration xd = myXml.CreateXmlDeclaration("1.0", "utf-8", null);             myXml.AppendChild(xd);               //创建根结点             XmlElement xmlRoot = myXml.CreateElement("root");             myXml.AppendChild(xmlRoot);               //创建 parent             XmlElement parent = myXml.CreateElement(parentName);             xmlRoot.AppendChild(parent);               foreach (Dictionary<string, string> xmlNodeInfo in XmlNodeInfoList)             {                 //在parent下面创建son                 XmlElement son = myXml.CreateElement(SonName);                 parent.AppendChild(son);                   foreach (string key in xmlNodeInfo.Keys)                 {                     //在son下面创建name                     XmlElement name = myXml.CreateElement(key);                     name.InnerText = xmlNodeInfo[key];                     son.AppendChild(name);                 }             }               //保存文档             myXml.Save("d:\\test.xml");         }           public static void CreateXML()         {             XmlDocument myXml = new XmlDocument();             //创建声明             XmlDeclaration xd = myXml.CreateXmlDeclaration("1.0", "utf-8", null);             myXml.AppendChild(xd);               //创建根结点             XmlElement xmlRoot = myXml.CreateElement("root");             myXml.AppendChild(xmlRoot);               //创建 parent             XmlElement parent = myXml.CreateElement("parent");             xmlRoot.AppendChild(parent);               //在parent下面创建son             XmlElement son = myXml.CreateElement("son");             parent.AppendChild(son);               //在son下面创建name             XmlElement name = myXml.CreateElement("name");             name.InnerText = "swift";             son.AppendChild(name);               //保存文档             myXml.Save("d:\\test.xml");         }           public static List<string> ParseXML(ref string errStr, string path)         {             List<string> nameList = new List<string>();               XmlDocument myXml = new XmlDocument();             try             {                 myXml.Load("d:\\test.xml");             }             catch (Exception e)             {                 errStr = string.Format("load xml is failed");                 return null;             }               //string path = "root";             //XmlNode xmlRoot = myXml.SelectSingleNode(path);             //if (xmlRoot == null)             //{             //    errStr = string.Format("do not have this path:{0}", path);             //    return null;             //}               //path = "parent/son";             XmlNodeList xmlNodeList = myXml.SelectNodes(path);             if (xmlNodeList == null || xmlNodeList.Count <= 0)             {                 errStr = string.Format("do not have this path:{0}", path);                 return null;             }               foreach (XmlNode xmlNode in xmlNodeList)             {                 string name = xmlNode.InnerText;                 nameList.Add(name);             }               return nameList;         }     } }

　　2.使用

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private void button1_Click(object sender, EventArgs e)    {        Dictionary<string, string> dt = new Dictionary<string, string>() { { "name", "lady gaga" }, { "age", "50" } };        Dictionary<string, string> dt1 = new Dictionary<string, string>() { { "name", "swift" }, { "age", "42" } };        List<Dictionary<string, string>> XmlNodeInfoList = new List<Dictionary<string, string>>();        XmlNodeInfoList.Add(dt);        XmlNodeInfoList.Add(dt1);        OperateXML.CreateXMLList("parent", "son", XmlNodeInfoList);    }      private void button2_Click(object sender, EventArgs e)    {        string errStr = string.Empty;        OperateXML.ParseXML(ref errStr,"root/parent/son");    }   private void button3_Click(object sender, EventArgs e)    {       OperateXML.CreateXML();    }