<?xml version="1.0" encoding="UTF-8"?>

<DataNode>

  <province id ="" name="江苏"><!--省-->

    <city id ="" name ="南京"></city><!--城市-->

    <city id ="" name ="镇江"></city>

    <city id ="" name ="南通"></city>

  </province>

  <province id ="" name="河南">

    <city id ="" name ="郑州"></city>

    <city id ="" name ="开封"></city>

    <city id ="" name ="洛阳"></city>

  </province>

</DataNode>

 using System.IO;

 using System.Xml;

 using UnityEngine;

 public class ReadXml : MonoBehaviour

 {

     private void Start()

     {

         string _path = Application.dataPath + "/TestXml.xml";

         if (File.Exists(_path))

         {

             XmlDocument _xmlDoc = new XmlDocument();

             //忽略XML中注释的影响。（默认情况下，读取xml文件是不忽略注释的，读取带注释的节点会造成异常，所以需要忽略注释的影响）

             XmlReaderSettings _set = new XmlReaderSettings();

             _set.IgnoreComments = true;

             XmlReader _reader = XmlReader.Create(_path, _set);

             //读取XML文件

             _xmlDoc.Load(_reader);

             //关闭流

             _reader.Close();

             //取根节点,根节点下的所有子节点（不包含孙节点）形成节点列表

             XmlNodeList _nodeList = _xmlDoc.SelectSingleNode("DataNode").ChildNodes;

             //遍历每一个节点，拿节点的属性以及节点的内容

             foreach (XmlElement _xe in _nodeList)

             {

                 Debug.Log("节点名称:" + _xe.Name);

                 Debug.Log("属性id :" + _xe.GetAttribute("id"));

                 Debug.Log("属性name :" + _xe.GetAttribute("name"));

                 foreach (XmlElement _x1 in _xe.ChildNodes)

                 {

                     if (_x1.Name == "city")

                     {

                         Debug.Log("city:" + _x1.InnerText);

                     }

                 }

             }

             //打印XML字符串

             Debug.Log("all = " + _xmlDoc.OuterXml);

         }

     }

 }