ASP.NET 对xml文件的读写,添加,修改,删除操作
asp.net 对xml文件的读写,添加,修改,删除操作
下面有代码调试正确
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Xml;
private XmlDocument xmlDoc;
//load xml file
private void LoadXml()
{
xmlDoc=new XmlDocument();
xmlDoc.Load(Server.MapPath("User.xml"));
}
//添加节点
private void AddElement()
{
LoadXml();
XmlNode xmldocSelect=xmlDoc.SelectSingleNode("user");
XmlElement el=xmlDoc.CreateElement("person"); //添加person节点
el.SetAttribute("name","风云"); //添加person节点的属性"name"
el.SetAttribute("sex","女"); //添加person节点的属性 "sex"
el.SetAttribute("age","25"); //添加person节点的属性 "age"
XmlElement xesub1=xmlDoc.CreateElement("pass"); //添加person节点的里的节点
xesub1.InnerText="123";//设置文本节点
el.AppendChild(xesub1);
XmlElement xesub2=xmlDoc.CreateElement("Address");
xesub2.InnerText="昆明";//设置文本节点
el.AppendChild(xesub2);
xmldocSelect.AppendChild(el);
xmlDoc.Save(Server.MapPath("user.xml"));
}
//修改节点
private void UpdateElement()
{
LoadXml();
XmlNodeList nodeList=xmlDoc.SelectSingleNode("user").ChildNodes;//获取bookstore节点的所有子节点
foreach(XmlNode xn in nodeList)//遍历所有子节点
{
XmlElement xe=(XmlElement)xn;//将子节点类型转换为XmlElement类型
if(xe.GetAttribute("name")=="风云")//如果name属性值为“风云”
{
xe.SetAttribute("name","发明");
//如果下面有子节点在下走
XmlNodeList nls=xe.ChildNodes;//继续获取xe子节点的所有子节点
foreach(XmlNode xn1 in nls)//遍历
{
XmlElement xe2=(XmlElement)xn1;//转换类型
if(xe2.Name=="pass")//如果找到
{
xe2.InnerText="66666";//则修改
break;
}
}
break;
}
}
xmlDoc.Save(Server.MapPath("user.xml"));//保存
}
//删出节点
private void deleteNode()
{
LoadXml();
XmlNodeList xnl=xmlDoc.SelectSingleNode("user").ChildNodes;
foreach(XmlNode xn in xnl)
{
XmlElement xe=(XmlElement)xn;
if(xe.GetAttribute("name")=="发明")
{
//xe.RemoveAttribute("name");//删除name属性
xe.RemoveAll();//删除该节点的全部内容
break;
}
}
xmlDoc.Save(Server.MapPath("user.xml"));//保存
}
private void showIt()
{
LoadXml();
XmlNode xn=xmlDoc.SelectSingleNode("user");
XmlNodeList xnl=xn.ChildNodes;
foreach(XmlNode xnf in xnl)
{
XmlElement xe=(XmlElement)xnf;
// Console.WriteLine(xe.GetAttribute("name"));//显示属性值
// Console.WriteLine(xe.GetAttribute("sex"));
//
// XmlNodeList xnf1=xe.ChildNodes;
// foreach(XmlNode xn2 in xnf1)
// {
// Console.WriteLine(xn2.InnerText);//显示子节点点文本
// }
}
}
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
List:<asp:Button ID="btnAdd" runat="server" BorderStyle="groove" Text="添加节点" OnClick="btnAdd_Click"/>
<asp:Button ID="btnDelete" runat="server" BorderStyle="Dotted" Text="删除节点" OnClick="btnDelete_Click" />
<asp:Button ID="btnEdit" runat="server" BorderStyle="solid" Text="编辑第一个节点" OnClick="btnEdit_Click" />
<br />
<asp:ListBox ID="lb" runat="server" Width="200" Height="200" SelectionMode="multiple">
</asp:ListBox>
</div>
</form>
</body>
</html>
Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindListBox();
}
}
protected void BindListBox()
{
//Create XmlDocument
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("EquipConfig.xml"));
//Select xmlNode
XmlNode xn = xmlDoc.SelectSingleNode("equipConfig");
//Obtain XmlNodeList
XmlNodeList xnList = xn.ChildNodes;
foreach (XmlNode xnde in xnList) //more config
{
//XmlElement xe = (XmlElement)xnde;
//lb.Items.Add(new ListItem("Property", "Property", false));
//lb.Items.Add(xe.GetAttribute("ISBN"));
//XmlNodeList xnList1 = xnde.ChildNodes;
//foreach (XmlNode xn1 in xnList1)
//{
// lb.Items.Add(xn1.InnerText);
//}
this.lb.Items.Add(new ListItem(xnde.ChildNodes[2].InnerText, xnde.ChildNodes[0].InnerText));
}
}
protected void btnAdd_Click(object sender, EventArgs e)
{
//Create XmlDocument and Load xmlfile
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("EquipConfig.xml"));
//obtain rootNode
XmlNode root = xmlDoc.SelectSingleNode("equipConfig");
//Create config node
XmlElement config = xmlDoc.CreateElement("config");
config.SetAttribute("ISBN", "猫哥");
int _maxid = Convert.ToInt32(root.LastChild.FirstChild.InnerText);
_maxid++;
//create SubNode
XmlElement id = xmlDoc.CreateElement("id");
id.InnerText = _maxid.ToString();
XmlElement equipId = xmlDoc.CreateElement("equipId");
equipId.InnerText = _maxid.ToString();
XmlElement equipName = xmlDoc.CreateElement("equipName");
equipName.InnerText = "xinsoft" + _maxid.ToString();
XmlElement isCommon = xmlDoc.CreateElement("isCommon");
isCommon.InnerText = "1";
XmlElement isPublic = xmlDoc.CreateElement("isPublic");
isPublic.InnerText = "1";
XmlElement isLog = xmlDoc.CreateElement("isLog");
isLog.InnerText = "0";
XmlElement warningInterval = xmlDoc.CreateElement("warningInterval");
warningInterval.InnerText = "10";
config.AppendChild(id);
config.AppendChild(equipId);
config.AppendChild(equipName);
config.AppendChild(isCommon);
config.AppendChild(isPublic);
config.AppendChild(isLog);
config.AppendChild(warningInterval);
root.AppendChild(config);
xmlDoc.Save(Server.MapPath("EquipConfig.xml"));
this.lb.Items.Clear();
BindListBox();
}
protected void btnDelete_Click(object sender, EventArgs e)
{
for (int i = 0; i < this.lb.Items.Count; i++)
{
if (this.lb.Items[i].Selected)
{
DeleteNode(this.lb.Items[i].Value);
}
}
this.lb.Items.Clear();
BindListBox();
}
protected void DeleteNode(string id)
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("EquipConfig.xml"));
XmlNodeList xnl = xmlDoc.SelectSingleNode("equipConfig").ChildNodes;
XmlNode root = xmlDoc.SelectSingleNode("equipConfig");
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
if (xe.FirstChild.InnerText == id)
root.RemoveChild(xn);
}
xmlDoc.Save(Server.MapPath("EquipConfig.xml"));
}
protected void btnEdit_Click(object sender, EventArgs e)
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("EquipConfig.xml"));
XmlNode root = xmlDoc.SelectSingleNode("equipConfig");
root.FirstChild.ChildNodes[2].InnerText = "leadbbs";
xmlDoc.Save(Server.MapPath("EquipConfig.xml"));
this.lb.Items.Clear();
BindListBox();
}
}
EquipConfig.xml
<?xml version="1.0" encoding="utf-8"?>
<equipConfig>
<config ISBN="猫哥">
<id>4</id>
<equipId>4</equipId>
<equipName>leadbbs</equipName>
<isCommon>1</isCommon>
<isPublic>1</isPublic>
<isLog>0</isLog>
<warningInterval>10</warningInterval>
</config>
</equipConfig>
转自:http://hi.baidu.com/dongdongjiao/blog/item/c989ccd361570f37970a1687.html
