Home > Backend Development > C#.Net Tutorial > Detailed explanation of sample code for reading and writing XML in C#

Detailed explanation of sample code for reading and writing XML in C#

黄舟
Release: 2017-03-22 11:12:33
Original
1461 people have browsed it

This article mainly introduces the relevant knowledge of C# reading and writing XML, which has a good reference value. Let’s take a look with the editor below

Read XML

XmlDocument xd = new XmlDocument(); 
      string fileName = @"D:\test.xml";
      xd.Load(fileName);
      XmlNodeList xmlNoteList = xd.GetElementsByTagName("user");
      List<User> users = new List<User>();
     
      foreach (XmlElement item in xmlNoteList)
      {
        User user = new User();
        user.Id = int.Parse(item.GetAttribute("id"));
        XmlNodeList xnl = item.ChildNodes;
        user.Name = xnl[0].InnerXml;
        user.Age =int.Parse(xnl[1].InnerXml);
        user.Gender = xnl[2].InnerXml;
        users.Add(user);
      }
      foreach (var item in users)
      {
        Console.WriteLine(item);
      }

Read XML
Copy after login
<?xml version="1.0" encoding="gb2312"?>
<users>
  <user id=&#39;1&#39;>
    <name >张三</name>
    <age>15</age>
    <gender>男</gender>
  </user>
  <user id=&#39;2&#39;>
    <name>李四</name>
    <age>14</age>
    <gender>男</gender>
  </user>
</users>

test.xml
Copy after login

Write XML

string fileName =@"D:\test.xml";
      XmlDocument xmlDoc = new XmlDocument();
      XmlNode header = xmlDoc.CreateXmlDeclaration("1.0","utf-8",null);
      xmlDoc.AppendChild(header);
      //创建一级节点
      XmlElement rootNode = xmlDoc.CreateElement("users");
      List<User> list = GetUsers();
      foreach (var item in list)
      {
        XmlElement xn = InserUser(item,xmlDoc);
        rootNode.AppendChild(xn);
      }  
      xmlDoc.AppendChild(rootNode);
      xmlDoc.Save(fileName);
    }
    /// <summary>
    /// 创建整个user的元素
    /// </summary>
    /// <param name="user"></param>
    /// <param name="xmlDoc"></param>
    /// <returns></returns>
    private static XmlElement InserUser(User user, XmlDocument xmlDoc)
    {
      XmlElement xn = xmlDoc.CreateElement("user");
      xn.SetAttribute("id", user.Id + "");
      xn.AppendChild(GetXmlNode(xmlDoc,"name",user.Name));
      xn.AppendChild(GetXmlNode(xmlDoc, "age", user.Age + ""));
      xn.AppendChild(GetXmlNode(xmlDoc, "gender", user.Gender));
      return xn;
    }
    private static XmlElement GetXmlNode(XmlDocument xmlDoc,string name,string value)
    {
      XmlElement xn = xmlDoc.CreateElement(name);
      xn.InnerText = value;
      return xn;
    }
    private static List<User> GetUsers()
    {
      List<User> list = new List<User>();
      for (int i = 0; i < 10; i++)
      {
        User user = new User();
        user.Id = i;
        user.Name = "Name" + i;
        user.Age = 15;
        user.Gender = "男";
        list.Add(user);
      }
      return list;
    }

Write XML
Copy after login

Entity class

class User
  {
    public int Id { set; get; }
    public string Name { get; set; }
    public int Age { get; set; }
    public string Gender { set; get; }
    public override string ToString()
    {
      return Id +","+Name + "," +Age+"," + Gender;
    }
  }

Entity
Copy after login

The above is the detailed content of Detailed explanation of sample code for reading and writing XML in C#. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template