asp.net操作xml增刪改示例分享

    這篇文章主要介紹了asp.net操作xml增刪改示例,需要的朋友可以參考下
    代碼如下:
    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"));
    }
    //添加節(jié)點
    private void AddElement()
    {
    LoadXml();
    XmlNode xmldocSelect=xmlDoc.SelectSingleNode("user");
    XmlElement el=xmlDoc.CreateElement("person"); //添加person節(jié)點
    el.SetAttribute("name","風(fēng)云"); //添加person節(jié)點的屬性"name"
    el.SetAttribute("sex","女"); //添加person節(jié)點的屬性 "sex"
    el.SetAttribute("age","25"); //添加person節(jié)點的屬性 "age"
    XmlElement xesub1=xmlDoc.CreateElement("pass"); //添加person節(jié)點的里的節(jié)點
    xesub1.InnerText="123"; //設(shè)置文本節(jié)點
    el.AppendChild(xesub1);
    XmlElement xesub2=xmlDoc.CreateElement("Address");
    xesub2.InnerText="昆明"; //設(shè)置文本節(jié)點
    el.AppendChild(xesub2);
    xmldocSelect.AppendChild(el);
    xmlDoc.Save(Server.MapPath("user.xml"));
    }
    //修改節(jié)點
    private void UpdateElement()
    {
    LoadXml();
    XmlNodeList nodeList=xmlDoc.SelectSingleNode("user").ChildNodes; //獲取bookstore節(jié)點的所有子節(jié)點
    foreach(XmlNode xn in nodeList) //遍歷所有子節(jié)點
    {
    XmlElement xe=(XmlElement)xn; //將子節(jié)點類型轉(zhuǎn)換為XmlElement類型
    if(xe.GetAttribute("name")=="風(fēng)云") //如果name屬性值為“風(fēng)云”
    {
    xe.SetAttribute("name","發(fā)明"); //如果下面有子節(jié)點在下走
    XmlNodeList nls=xe.ChildNodes;//繼續(xù)獲取xe子節(jié)點的所有子節(jié)點
    foreach(XmlNode xn1 in nls)//遍歷
    {
    XmlElement xe2=(XmlElement)xn1;//轉(zhuǎn)換類型
    if(xe2.Name=="pass")//如果找到
    {
    xe2.InnerText="66666";//則修改
    break;
    }
    }
    break;
    }
    }
    xmlDoc.Save(Server.MapPath("user.xml"));//保存
    }
    //刪出節(jié)點
    private void deleteNode()
    {
    LoadXml();
    XmlNodeList xnl=xmlDoc.SelectSingleNode("user").ChildNodes;
    foreach(XmlNode xn in xnl)
    {
    XmlElement xe=(XmlElement)xn;
    if(xe.GetAttribute("name")=="發(fā)明")
    {
    //xe.RemoveAttribute("name");//刪除name屬性
    xe.RemoveAll();//刪除該節(jié)點的全部內(nèi)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"));//顯示屬性值
    // Console.WriteLine(xe.GetAttribute("sex"));
    // // XmlNodeList xnf1=xe.ChildNodes;
    // foreach(XmlNode xn2 in xnf1) //
    {
    // Console.WriteLine(xn2.InnerText);
    //顯示子節(jié)點點文本
    // }
    }
    }
    Xml的樣式:
    代碼如下:
    <?xml version="1.0" encoding="gb2312"?>
    <user>
    <person> </person>
    <person name="風(fēng)拉" sex="男" age="25">
    <pass>123</pass>
    <Address>大明</Address>
    </person>
    <person name="風(fēng)云" sex="女" age="25">
    <pass>123</pass>
    <Address>昆明</Address>
    </person>
    </user>