asp.net 对xml文件的读写,添加,修改,删除操作
Code
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
// }
}
}
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
// }
}
}