asp.net控制xml

最新推荐文章于 2025-12-01 22:23:21 发布

原创最新推荐文章于 2025-12-01 22:23:21 发布 · 508 阅读

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文章标签：

#asp.net #dataset #server #button #object #asp

本文介绍了一个使用C#进行XML文件操作的实例，包括加载、添加、更新及删除节点的方法。通过具体的代码实现，展示了如何利用XmlDocument类来读取XML文件，并进行节点的增删改查等操作。

using System;
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.IO;
using System.Net;
using System.Text;
using System.Xml;
public partial class test : System.Web.UI.Page
{
private XmlDocument xmlDoc;
    private void Page_Load(object sender, EventArgs e)
    {
        DataSet objDataSet = new DataSet();
        objDataSet.ReadXml(Server.MapPath("user.xml"));
         mygrid.DataSource = objDataSet.Tables[0].DefaultView;
         mygrid.DataBind();
    }
        //load xml file
        private void LoadXml()
        {
            xmlDoc=new XmlDocument();
            xmlDoc.Load(Server.MapPath("user.xml"));
        }

        //添加节点
    public void AddElement(object sender,EventArgs e)
        {

            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
    public void UpdateElement(object sender,EventArgs e)
        {
            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
     public void deleteNode(object sender,EventArgs e)
        {

            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
        }

    public 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
//                }

}

}
===============================================================

test.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %>

<HTML>
<HEAD>
<title>得到网页源代码</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5";>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="aspNetBuffer" method="post" runat="server">
<asp:DataGrid runat="server" ID="mygrid" />
<asp:Button id="a1" Text="Add Node" runat="server" OnClick="AddElement" /><br />
<asp:Button ID="a2" Text="Delete Node" runat="server" OnClick="deleteNode" /><br />
<asp:Button ID="a4" Text="Upate Node" runat="server" OnClick="UpdateElement" /><br />
<asp:Button ID="a3" Text="Add Node" runat="server" /><br />
</form>
</body>
</HTML>

==========================================================================

user.xml

<?xml version="1.0" encoding="utf-8"?>
<user>
<person name="风拉" sex="男" age="25">
    <pass>123</pass>
    <Address>大明</Address>
</person>
<person name="发明" sex="女" age="25">
    <pass>66666</pass>
    <Address>昆明</Address>
</person>
<person name="发明" sex="女" age="25">
    <pass>66666</pass>
    <Address>昆明</Address>
</person>
<person name="发明" sex="女" age="25">
    <pass>66666</pass>
    <Address>昆明</Address>
</person>
</user>