using UnityEngine;using System.Collections;using System.Linq;using System.Xml.Linq;using System; public class XML {//static string xmlpath = Application.persistentDataPath + @"\myXML";//平台相关的路径（移动端）static string xmlpath=Application.dataPath+@"\mydfdfXML";//电脑上的路径，移动端没有这个访问权限/// <summary>/// 初始化一个XML文件/// </summary>public static void CreateXMLDocument(){XElement root = new XElement("XMLContent",new XElement("Herb1",new XAttribute("MyVaule","0")),new XElement("Herb2",new XAttribute("MyVaule","0")),new XElement("Herb3",new XAttribute("MyVaule","0")),new XElement("Pill1",new XAttribute("MyVaule","0")),new XElement("Pill2",new XAttribute("MyVaule","0")),new XElement("Pill3",new XAttribute("MyVaule","0")),new XElement("Level",new XAttribute("MyVaule","0")),new XElement("Root","root"));root.Save(xmlpath);}public static XElement LoadXMLFromFile(){XElement root = XElement.Load(xmlpath);return root;}public static void SetElementValue(string name, string value){XElement root = LoadXMLFromFile();root.Element(name).SetAttributeValue("MyVaule", value);root.Save(xmlpath);}/// <summary>/// 在根节点元素之前添加新的元素/// </summary>/// <param name="name">元素名字</param>/// <param name="value">元素的值</param>public static void AddElement(string name, string value){XElement root = LoadXMLFromFile();root.Element("Root").AddBeforeSelf(new XElement(name, new XAttribute("MyValue",value)));root.Save(xmlpath);}/// <summary>/// 删除指定的元素/// </summary>/// <param name="name">要删除的元素名称</param>public static void RemoveElement(string name){XElement root = LoadXMLFromFile();root.Element(name).Remove();root.Save(xmlpath);}/// <summary>/// 根据元素名查找元素对应的值/// </summary>/// <param name="name">元素名</param>/// <returns></returns>public static string GetElementValue(string name){XElement root = LoadXMLFromFile();XAttribute xattr = root.Element(name).Attribute("MyVaule");string s = xattr.Value;return s;}}

1. XElement xperson = new XElement("person");//根节点  
2.             xperson.SetAttributeValue("age", 30);//设置属性  
3.             XElement xperson1 = new XElement("person1");  
4.             xperson1.Value = "tom";//设置 innerText值  
5.             xperson1.SetAttributeValue("sex", "男");  
6.             XElement xperson2 = new XElement("person2");  
7.   
8.             xperson.Add(xperson1);//加入到根结点  
9.             xperson.Add(xperson2);  
10.             string xml = xperson.ToString();  
11.             Console.WriteLine(xml);  
12.             using (Stream stream = File.OpenWrite(@"D:\1.xml"))  
13.             {  
14.                 byte[] bytes = new byte[1024];  
15.                 bytes = Encoding.UTF8.GetBytes(xml);  
16.                 stream.Write(bytes, 0, bytes.Length);//写入文件  
17.             }  

1. using (Stream stream = File.OpenRead(@"D:\net实例教程\练习net\XML练习\XML练习\App.config"))  
2. {  
3.   
4.     using (StreamReader reader = new StreamReader(stream))  
5.     {   
6.         XDocument xml=XDocument.Load(reader);  
7.         IEnumerable<XElement> XConnstr = xml.Root.Elements("connectionStrings");  
8.       
9.         Console.WriteLine(XConnstr.Count().ToString());  
10.         if (XConnstr.Count() == 1)  
11.         {  
12.              XElement Connstr = XConnstr.ElementAt(0);  
13.             foreach(XElement conn in Connstr.Elements("add"))  
14.             {  
15.                 string name = conn.Attribute("name").Value;  
16.                 string Connection = conn.Attribute("connectionString").Value;  
17.                 Console.WriteLine("Name={0},Age={1}", name, Connection);  
18.               
19.             }  
20.           
21.         }  
22.     }  
23.   
24. } 

http://blog.csdn.net/xutao_ustc/article/details/6316933

<?xml version="1.0" encoding="utf-8" ?><UIConfig Count="1">  <workflow name="OilInbound">    <activity name="Started">        <Input>          <Page></Page>          <Method></Method>        </Input>        <Brief>          <Page>OilInboundTaskDetail</Page>          <Method>GetTaskDetailModel</Method>               </Brief>        <Detail>          <Page>OilInboundTaskDetail</Page>          <Method>GetTaskDetailModel</Method>        </Detail>        <DisplayName>任务创建</DisplayName>    </activity>    <activity name="OilCompositionAnalysis">        <Input>          <Page>OilAnalyzingDataInput</Page>          <Method>GetOilAnalyzingDataInputModel</Method>        </Input>        <Brief>                 <Page>OilAnalyzingDataBrief</Page>          <Method>GetOilAnalyzingDataBriefModel</Method>        </Brief>        <Detail>          <Page>OilAnalyzingDataDetail</Page>          <Method>GetOilAnalyzingDataDetailModel</Method>        </Detail>        <DisplayName>化验</DisplayName>           </activity>  </workflow></UIConfig>

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections;using System.Xml.Linq;using System.Xml;namespace ConsoleApplication2{    class Program    {        static void Main(string[] args)        {            XElement doc =  XElement.Load("..//..//data-config.xml");//根元素            string sss = getStr(doc, "OilInbound", "Started", "Input", "Page");            Console.WriteLine(sss);            Console.ReadKey();        }        //如果当前元素的子元素只有一个，可以直接用.Element("elementName")来得到，如果是多个子元素就用Elements("elementName")得到        private static string getStr(XElement doc,string workflowName,string stepName,string typeName,string pageMethod) {            var strEle = from workflow in doc.Elements("workflow")                              where (string)workflow.Attribute("name") == workflowName                              select                              new{                               str = workflow.Elements("activity").TakeWhile(x => (string)x.Attribute("name") == stepName).First().Element(typeName).Element(pageMethod).Value                              };            return strEle.First().str;                   }    }  }