读XML

XmlDocument xd = new XmlDocument(); string fileName = @"D:\test.xml"; xd.Load(fileName); XmlNodeList xmlNoteList = xd.GetElementsByTagName("user"); List<User> users = new List<User>(); foreach (XmlElement item in xmlNoteList) { User user = new User(); user.Id = int.Parse(item.GetAttribute("id")); XmlNodeList xnl = item.ChildNodes; user.Name = xnl[0].InnerXml; user.Age =int.Parse(xnl[1].InnerXml); user.Gender = xnl[2].InnerXml; users.Add(user); } foreach (var item in users) { Console.WriteLine(item); }Read XML<?xml version="1.0" encoding="gb2312"?><users> <user id='1'> <name >张三</name> <age>15</age> <gender>男</gender> </user> <user id='2'> <name>李四</name> <age>14</age> <gender>男</gender> </user></users>test.xml

写XML

string fileName =@"D:\test.xml"; XmlDocument xmlDoc = new XmlDocument(); XmlNode header = xmlDoc.CreateXmlDeclaration("1.0","utf-8",null); xmlDoc.AppendChild(header); //创建一级节点 XmlElement rootNode = xmlDoc.CreateElement("users"); List<User> list = GetUsers(); foreach (var item in list) { XmlElement xn = InserUser(item,xmlDoc); rootNode.AppendChild(xn); } xmlDoc.AppendChild(rootNode); xmlDoc.Save(fileName); } /// <summary> /// 创建整个user的元素 /// </summary> /// <param name="user"></param> /// <param name="xmlDoc"></param> /// <returns></returns> private static XmlElement InserUser(User user, XmlDocument xmlDoc) { XmlElement xn = xmlDoc.CreateElement("user"); xn.SetAttribute("id", user.Id + ""); xn.AppendChild(GetXmlNode(xmlDoc,"name",user.Name)); xn.AppendChild(GetXmlNode(xmlDoc, "age", user.Age + "")); xn.AppendChild(GetXmlNode(xmlDoc, "gender", user.Gender)); return xn; } private static XmlElement GetXmlNode(XmlDocument xmlDoc,string name,string value) { XmlElement xn = xmlDoc.CreateElement(name); xn.InnerText = value; return xn; } private static List<User> GetUsers() { List<User> list = new List<User>(); for (int i = 0; i < 10; i++) { User user = new User(); user.Id = i; user.Name = "Name" + i; user.Age = 15; user.Gender = "男"; list.Add(user); } return list; }Write XML

实体类

class User { public int Id { set; get; } public string Name { get; set; } public int Age { get; set; } public string Gender { set; get; } public override string ToString() { return Id +","+Name + "," +Age+"," + Gender; } }Entity

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