WINFORM 怎么添加 XML节点

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;
using System.Xml.XPath;
using System.Xml.Xsl;
using System.IO;namespace testXML
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }       
                   private void Form1_Load(object sender, EventArgs e)
        {
             try
            {
                // 创建XmlTextWriter类的实例对象
                XmlTextWriter textWriter = new XmlTextWriter("d:\\config.xml", null);
                textWriter.Formatting = Formatting.Indented;                // 开始写过程，调用WriteStartDocument方法
                textWriter.WriteStartDocument();                // 写入说明
                textWriter.WriteComment("读写XML文件");
                textWriter.WriteComment("config.xml in root dir");                //创建一个节点   油轮信息
                textWriter.WriteStartElement("student");
               
                textWriter.WriteElementString("name", "刘杰");
                textWriter.WriteElementString("sex", "女");
                textWriter.WriteEndElement();                //textWriter.WriteStartElement("username");
                //textWriter.WriteElementString("yanyuan", "1");
                //textWriter.WriteElementString("王磊", "1");
                //textWriter.WriteEndElement();                //我想在这里添加一个节点 （USERNAME）在这里报错了 怎么添加节点了                 // 写文档结束，调用WriteEndDocument方法
                textWriter.WriteEndDocument();                // 关闭textWriter
                textWriter.Close();            }
            catch (System.Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }            //}
        }
       
    }
}

Answer 1

http://www.cnblogs.com/sunrack/articles/1081714.html

Answer 2

public static void Insert(string path, string node, string element, string attribute, string value)
        {
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(path);
                XmlNode xn = doc.SelectSingleNode(node);
                if (element.Equals(""))
                {
                    if (!attribute.Equals(""))
                    {
                        XmlElement xe = (XmlElement)xn;
                        xe.SetAttribute(attribute, value);
                    }
                }
                else
                {
                    XmlElement xe = doc.CreateElement(element);
                    if (attribute.Equals(""))
                    {
                        xe.InnerText = value;
                    }
                    else
                    {
                        xe.SetAttribute(attribute, value);
                    }
                    xn.AppendChild(xe);
                }
                doc.Save(path);
            }
            catch { }
        }

Answer 3

   xtw.WriteStartElement("username");
                xtw.WriteEndElement();

Answer 4

参看这里，XML完全操作(增删改查)，希望对你有帮助！

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