C#讀取XML中元素和屬性值的實現代碼

1、school.xml，如下：

複製代碼 代碼如下:<?xml version="1.0" encoding="UTF-8"?>
<!--啟明培訓學校學生資訊：
1、一年級學生
2、二年級學生
-->
<school name="啟明培訓學校">
<grades>
<grade id="1" name="一年級">
<classes>
<class id="101" name="一班">
<teachers>
<teacher teach="語文"><teacherName><![CDATA[王軍]]></teacherName></teacher>
<teacher teach="數學"><teacherName><![CDATA[周傑]]></teacherName></teacher>
</teachers>
<students>
<student id="10101">
<name>亢陽</name>
<sex>女</sex>
</student>
<student id="10102">
<name>田鎮南</name>
<sex>男</sex>
</student>
<student id="10103">
<name>劉嘉</name>
<sex>女</sex>
</student>
</students>
</class>
</classes>
</grade>
<grade id="2" name="二年級">
<classes>
<class id="201" name="二班">
<teachers>
<teacher teach="語文"><teacherName><![CDATA[胡軍]]></teacherName></teacher>
<teacher teach="數學"><teacherName><![CDATA[王潔]]></teacherName></teacher>
</teachers>
<students >
<student id="20101">
<name>胡豔</name>
<sex>女</sex>
</student>
<student id="20102">
<name>張三</name>
<sex>男</sex>
</student>
<student id="20103">
<name>李四</name>
<sex>女</sex>
</student>
</students>
</class>
</classes>
</grade>
</grades>
</school>

2、XMLReader.cs （我用的是控制台應用程式，直接附上全部代碼吧） 複製代碼 代碼如下: using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
namespace XMLReader
{
class XMLReader
{
static void Main(string[] args)
{
string xmlFilePath = "school.xml";
XmlDocument doc = new XmlDocument();
doc.Load(xmlFilePath);

//學校 使用xpath運算式選擇文檔中所有的schoo的子節點
XmlNodeList schoolNodeList = doc.SelectNodes("/school");
if (schoolNodeList != null)
{
foreach (XmlNode schoolNode in schoolNodeList)
{
//通過Attributes獲得屬性名稱為name的屬性
string schoolName = schoolNode.Attributes["name"].Value;
Console.WriteLine("學校：" + schoolName);

#region 年級
//通過SelectSingleNode方法獲得當前節點下的grades子節點
XmlNode gradesNode = schoolNode.SelectSingleNode("grades");
if (gradesNode != null)
{
//通過ChildNodes屬性獲得grades的所有一級子節點
XmlNodeList gradeNodeList = gradesNode.ChildNodes;
if (gradeNodeList != null)
{
foreach (XmlNode gradeNode in gradeNodeList)
{
Console.WriteLine("\t");
Console.WriteLine("年級：" + gradeNode.Attributes["name"].Value + " ID:" + gradeNode.Attributes["id"].Value);

#region 班級
//通過SelectSingleNode方法獲得當前節點下的classes子節點
XmlNode classesNode = gradeNode.SelectSingleNode("classes");
if (classesNode != null)
{
//通過ChildNodes屬性獲得classes的所有一級子節點
XmlNodeList classNodeList = classesNode.ChildNodes;
if (classNodeList != null)
{
foreach (XmlNode classNode in classNodeList)
{
Console.WriteLine(" 班級：" + classNode.Attributes["name"].Value + " ID:" + classNode.Attributes["id"].Value);

#region 老師
XmlNode teachersNode = classNode.SelectSingleNode("teachers");
if (teachersNode != null)
{
XmlNodeList teacherNodeList = teachersNode.ChildNodes;
if (teacherNodeList != null)
{
foreach (XmlNode teacherNode in teacherNodeList)
{
XmlNode teacherNameNode = teacherNode.FirstChild;
XmlCDataSection cdate = (XmlCDataSection)teacherNameNode.FirstChild;
if (cdate != null)
{
Console.WriteLine(" "+teacherNode.Attributes["teach"].Value + "老師："+cdate.InnerText.Trim())；

}
}
}
}
#endregion 老師

#region 所有學生
XmlNode studentsNode = classNode.SelectSingleNode("students");
if (studentsNode != null)
{
XmlNodeList studentNodeList = studentsNode.ChildNodes;
if (studentNodeList != null)
{
foreach (XmlNode studentNode in studentNodeList)
{
Console.WriteLine(" 學生：" + studentNode.Attributes["id"].Value);

//擷取student的屬性值name和文本
XmlNode stu1 = studentNode.FirstChild;
XmlElement xe1 = (XmlElement)stu1;
if (xe1 != null)
{
Console.WriteLine(" 姓名：" + xe1.InnerText.Trim());
}
//擷取student的屬性值sex和文本
XmlNode stu2 = studentNode.LastChild;
XmlElement xe2 = (XmlElement)stu2;
if (xe2 != null)
{
Console.WriteLine(" 姓別：" + xe2.InnerText.Trim());
}
}
}
#endregion 所有學生
}
}
}
#endregion 班級
}
}
}
#endregion 年級
Console.Write("\r\n按隨意鍵跳出");
Console.ReadKey();
}

}
}
}
}
}

ok，運行，