簡單讀寫XML文件

IPAddress.xml?? 文件如下：

 <?xml?version="1.0"?encoding="utf-8"?>
<IP>
 ??????<IPAddress>192.168.0.120</IPAddress>
</IP> 

在 Form 窗體(讀取XML配置.Designer.cs)中有如下控件：

代碼 ????????private??System.Windows.Forms.Button??button1;??????????//“讀取”按鈕
????????private??System.Windows.Forms.Button??button2;??????????//“修改”按鈕
????????private??System.Windows.Forms.TextBox??textBox1;?????//?用于顯示和修改IP地址
????????private??System.Windows.Forms.Label??label1;??????????????//?顯示“IP地址：”
????????private??System.Windows.Forms.Button??button3;??????????//?“保存”按鈕

 

讀取XML配置.cs? 文件如下：

代碼

 using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Text;
using?System.Windows.Forms;
//myself
using?System.Xml;

namespace?CS_Test
 {
 ????public?partial?class?讀取XML配置?:?Form
 ????{
 ????????public?讀取XML配置()
 ????????{
 ????????????InitializeComponent();
 ????????}

 ????????XmlDocument?doc?=?null;
 ????????XmlNodeList?nodeList?=?null;
 ????????string?path?=null;
 ????????//讀取
????????private?void?button1_Click(object?sender,?EventArgs?e)
 ????????{
 ????????????doc?=?new?XmlDocument();
 ????????????//讀取文件地址
????????????path?=?Application.StartupPath.ToString();
 ????????????//MessageBox.Show(path);
????????????int?n?=?path.LastIndexOf("bin\\Debug");
 ????????????path?=?path.Substring(0,?n);
 ????????????doc.Load((path?+?"IPAddress.xml"));
 ????????????MessageBox.Show(path?+?"IPAddress.xml");

 ????????????if?(doc?!=?null)
 ????????????{
 ???????????????nodeList?=?doc.GetElementsByTagName("IPAddress");
 ???????????????textBox1.Text?=
 ??????????????????nodeList[0].FirstChild.Value.ToString();
 ????????????}
 ????????}
 ????????//修改
????????private?void?button2_Click(object?sender,?EventArgs?e)
 ????????{
 ????????????textBox1.ReadOnly?=?false;
 ????????}
 ????????//保存
????????private?void?button3_Click(object?sender,?EventArgs?e)
 ????????{
 ????????????string?newIP?=?textBox1.Text.ToString();
 ????????????if?(nodeList?!=?null)
 ????????????{
 ????????????????if?(textBox1.Text.Trim()?!=?"")
 ????????????????{
 ????????????????????//通過根節點創建新元素
????????????????????XmlNode?n?=?doc.CreateTextNode(textBox1.Text.Trim());
 ????????????????????//通過父節點替換子節點
????????????????????nodeList[0].ReplaceChild(n,nodeList[0].FirstChild);
 ????????????????????doc.Save(path?+?"IPAddress.xml");
 ????????????????????MessageBox.Show("IP地址修改成功！");
 ????????????????????textBox1.ReadOnly?=?true;
 ????????????????}
 ????????????}
 ????????}
 ????}
 ????class?ProgramXML
 ????{
 ????????static?void?Main(string[]?args)
 ????????{
 ????????????Application.Run(new?讀取XML配置());
 ????????}
 ????}
 } 

本文轉自鋼鋼博客園博客，原文鏈接：http://www.cnblogs.com/xugang/archive/2010/04/17/1714199.html，如需轉載請自行聯系原作者

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