C# Linq讀取XML文件的實例

2020-01-24 03:16:38

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1、示例XML文件：Demo.xml

<?xml version="1.0" encoding="utf-8" ?>
<note>
  <conf>
    <to>infozero</to>
    <from>lerroy</from>
    <heading>測試信息</heading>
    <body>第一條測試信息</body>
    <title name="我的第一條消息">from myself</title>
  </conf>
  <conf>
    <to>infozero@163.com</to>
    <from>text</from>
    <heading> 時刻提醒我 </heading>
    <body>這是一條測試信息！</body>
    <title name="我的第二條消息">from others</title>
  </conf>
</note>

2、在程序中引用以下命名空間

復制代碼代碼如下:

using System;
using System.Linq;
using System.Xml.Linq;

3、讀取代碼如下：

復制代碼代碼如下:

class Program
    {
        static void Main(string[] args)
        {
            XDocument doc = XDocument.Load("demo.xml");
            var text = from t in doc.Descendants("conf")                    //定位到節點 
                       .Where(w => w.Element("to").Value.Contains('@'))   //若要篩選就用上這個語句 
                       select new
                       {
                           to = t.Element("to").Value,
                           froms = t.Element("from").Value,
                           head = t.Element("heading").Value,
                           body = t.Element("body").Value,
                           title = t.Element("title").Attribute("name").Value   //注意此處用到 attribute 
                       };
            foreach (var a in text)
            {
                Console.WriteLine(a.to);
                Console.WriteLine(a.froms);
                Console.WriteLine(a.head);
                Console.WriteLine(a.body);
                Console.WriteLine(a.title);
            }
            Console.ReadKey();
        }
    }