Unity上使用Linq To XML

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;
}
}

http://blog.csdn.net/lyq5655779/article/details/7183350

1.写XML文件

XElement xperson = new XElement("person");//根节点
            xperson.SetAttributeValue("age", 30);//设置属性
            XElement xperson1 = new XElement("person1");
            xperson1.Value = "tom";//设置 innerText值
            xperson1.SetAttributeValue("sex", "男");
            XElement xperson2 = new XElement("person2");

            xperson.Add(xperson1);//加入到根结点
            xperson.Add(xperson2);
            string xml = xperson.ToString();
            Console.WriteLine(xml);
            using (Stream stream = File.OpenWrite(@"D:1.xml"))
            {
                byte[] bytes = new byte[1024];
                bytes = Encoding.UTF8.GetBytes(xml);
                stream.Write(bytes, 0, bytes.Length);//写入文件
            }

2.读取XML文件

  ----------如何读取xml文件的内容----------------

            using(Stream stream=File.OpenRead(@"D:1.xml"))
            {
               using(StreamReader reader= new StreamReader(stream))
               {
                   //从Reflector从可以看到TextReader的子类是StreamReader所以，可以直接用StreamReader来读取XML文档，传给XDocument.Load方法
                  XDocument xml=XDocument.Load(reader);//load里面
                  Console.WriteLine( xml.Root.ToString());//xml文档
                  Console.WriteLine(xml.Root.Nodes().ElementAt(0).ToString());//ElementAt()第几个子节点 
                  Console.WriteLine(xml.Root.Attribute("age").Value);//返回根节点的属性的值
                  XNode nodes=xml.Root.Nodes().ElementAt(0);
                  XElement e=nodes as XElement;
                  Console.WriteLine(e.Attribute("sex").Value);//读取第一个子节点的属性
                }
            
            }

3.读取App.Config

  using (Stream stream = File.OpenRead(@"D: et实例教程练习netXML练习XML练习App.config"))
            {
                using (StreamReader reader = new StreamReader(stream))
                {
                    XDocument xml = XDocument.Load(reader);
                    XNode n1 = xml.Root.Nodes().ElementAt(0);//这就是<configuration> ------下面----<connectionStrings>
                    XElement e1 = n1 as XElement;
                    XNode n1_1 = e1.Nodes().ElementAt(0);//connectionStrings下面的<add .....>第一个
                    XNode n1_2 = e1.Nodes().ElementAt(1);//connectionStrings下面的<add .....>第一个
                    XElement e1_1 = n1_1 as XElement;
                    XElement e1_2 = n1_2 as XElement;
                    //Console.WriteLine("Name={0},Connection={1}", e1.Attribute("name").Value, e1.Attribute("connectionString").Value);
                    Console.WriteLine("第一个连接字符串的name={0},Connection={1}", e1_1.Attribute("name"), e1_1.Attribute("connectionString"));

                    Console.WriteLine("第一个连接字符串的name={0},Connection={1}", e1_2.Attribute("name"), e1_2.Attribute("connectionString"));

                }
            }
       

         

using (Stream stream = File.OpenRead(@"D:
et实例教程练习netXML练习XML练习App.config"))
{

    using (StreamReader reader = new StreamReader(stream))
    {
        XDocument xml=XDocument.Load(reader);
        IEnumerable<XElement> XConnstr = xml.Root.Elements("connectionStrings");

        Console.WriteLine(XConnstr.Count().ToString());
        if (XConnstr.Count() == 1)
        {
             XElement Connstr = XConnstr.ElementAt(0);
            foreach(XElement conn in Connstr.Elements("add"))
            {
                string name = conn.Attribute("name").Value;
                string Connection = conn.Attribute("connectionString").Value;
                Console.WriteLine("Name={0},Age={1}", name, Connection);

            }

        }
    }

}