C#(Asp.net)对XML文件增、删、改、查(基于DOM)-优快云博客

本文链接：https://blog.youkuaiyun.com/classperson/article/details/1504131

asp.net文件xmlMain.aspx 和people.xml文件在同一目录下

前台html文件

<% @ Page language="c#" Codebehind="xmlMain.aspx.cs" AutoEventWireup="false" Inherits="xmlDocWeb.WebForm1" %>

<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

< HTML >

< HEAD >

< title > WebForm1 </ title >

< meta name ="GENERATOR" Content ="Microsoft Visual Studio .NET 7.1" >

< 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" style ="FONT-SIZE:10pt" >

< form id ="Form1" method ="post" runat ="server" >

< FONT face ="宋体" >

< asp:DataGrid id ="grd" style ="Z-INDEX: 101; LEFT: 80px; POSITION: absolute; TOP: 40px" runat ="server"

Width ="456px" ></ asp:DataGrid >

< asp:Button id ="btnAttributes" style ="Z-INDEX: 122; LEFT: 352px; POSITION: absolute; TOP: 448px"

runat ="server" Text ="遍历属性" ></ asp:Button >

< asp:Button id ="Button1" style ="Z-INDEX: 121; LEFT: 80px; POSITION: absolute; TOP: 424px" tabIndex ="6"

runat ="server" Text ="修改" ></ asp:Button >

< asp:TextBox id ="txttel2" style ="Z-INDEX: 120; LEFT: 80px; POSITION: absolute; TOP: 384px" tabIndex ="5"

runat ="server" ></ asp:TextBox >

< asp:Label id ="Label7" style ="Z-INDEX: 119; LEFT: 80px; POSITION: absolute; TOP: 360px" runat ="server" > 修改用户电话 </ asp:Label >

< asp:Button id ="btnAdd" style ="Z-INDEX: 118; LEFT: 352px; POSITION: absolute; TOP: 408px" runat ="server"

Text ="添加" ></ asp:Button >

< asp:TextBox id ="txtemail" style ="Z-INDEX: 117; LEFT: 384px; POSITION: absolute; TOP: 368px"

runat ="server" Width ="136px" tabIndex ="11" ></ asp:TextBox >

< asp:TextBox id ="txttel" style ="Z-INDEX: 116; LEFT: 384px; POSITION: absolute; TOP: 336px" runat ="server"

Width ="136px" tabIndex ="10" ></ asp:TextBox >

< asp:TextBox id ="txtaddress" style ="Z-INDEX: 115; LEFT: 384px; POSITION: absolute; TOP: 304px"

runat ="server" Width ="136px" tabIndex ="9" ></ asp:TextBox >

< asp:TextBox id ="txtid" style ="Z-INDEX: 114; LEFT: 384px; POSITION: absolute; TOP: 280px" runat ="server"

Width ="136px" tabIndex ="8" ></ asp:TextBox >

< asp:Label id ="Label6" style ="Z-INDEX: 113; LEFT: 328px; POSITION: absolute; TOP: 368px" runat ="server" > Email </ asp:Label >

< asp:Label id ="Label5" style ="Z-INDEX: 112; LEFT: 328px; POSITION: absolute; TOP: 344px" runat ="server" > TEL </ asp:Label >

< asp:Label id ="Label4" style ="Z-INDEX: 111; LEFT: 320px; POSITION: absolute; TOP: 312px" runat ="server" > ADDRESS </ asp:Label >

< asp:Label id ="Label3" style ="Z-INDEX: 110; LEFT: 320px; POSITION: absolute; TOP: 280px" runat ="server" > ID </ asp:Label >

< asp:TextBox id ="txtName2" style ="Z-INDEX: 109; LEFT: 384px; POSITION: absolute; TOP: 248px"

runat ="server" Width ="136px" tabIndex ="7" ></ asp:TextBox >

< asp:Label id ="Label2" style ="Z-INDEX: 108; LEFT: 320px; POSITION: absolute; TOP: 248px" runat ="server" > Name </ asp:Label >

< asp:Label id ="Label1" style ="Z-INDEX: 107; LEFT: 320px; POSITION: absolute; TOP: 216px" runat ="server" > 添加用户信息 </ asp:Label >

< asp:TextBox id ="txtname" style ="Z-INDEX: 106; LEFT: 80px; POSITION: absolute; TOP: 280px" runat ="server"

Width ="120px" tabIndex ="3" ></ asp:TextBox >

< asp:Button id ="btndel" style ="Z-INDEX: 105; LEFT: 80px; POSITION: absolute; TOP: 312px" runat ="server"

Text ="删除" tabIndex ="4" ></ asp:Button >

< asp:Label id ="lblTel" style ="Z-INDEX: 104; LEFT: 192px; POSITION: absolute; TOP: 224px" runat ="server" > Label </ asp:Label >

< asp:Button id ="btnQuery" style ="Z-INDEX: 103; LEFT: 80px; POSITION: absolute; TOP: 248px" runat ="server"

Text ="查询" tabIndex ="2" ></ asp:Button >

< asp:DropDownList id ="ddlName" style ="Z-INDEX: 102; LEFT: 80px; POSITION: absolute; TOP: 216px" runat ="server"

Width ="95px" Height ="78px" tabIndex ="1" ></ asp:DropDownList ></ FONT >

</ form >

</ body >

</ HTML >

后台C#文件

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;

using System.Xml.XPath;

using System.Text;

namespace xmlDocWeb

{

/// <summary>

/// WebForm1 的摘要说明。

/// </summary>

/// 把xml传到客户端处理，充分利用客户端的资源

public class WebForm1 : System.Web.UI.Page

{

protected System.Web.UI.WebControls.DropDownList ddlName;

protected System.Web.UI.WebControls.Button btnQuery;

protected System.Web.UI.WebControls.Label lblTel;

protected System.Web.UI.WebControls.Button btndel;

protected System.Web.UI.WebControls.TextBox txtname;

protected System.Web.UI.WebControls.Label Label1;

protected System.Web.UI.WebControls.Label Label2;

protected System.Web.UI.WebControls.TextBox txtName2;

protected System.Web.UI.WebControls.Label Label3;

protected System.Web.UI.WebControls.Label Label4;

protected System.Web.UI.WebControls.Label Label5;

protected System.Web.UI.WebControls.Label Label6;

protected System.Web.UI.WebControls.TextBox txtid;

protected System.Web.UI.WebControls.TextBox txtaddress;

protected System.Web.UI.WebControls.TextBox txttel;

protected System.Web.UI.WebControls.TextBox txtemail;

protected System.Web.UI.WebControls.Button btnAdd;

protected System.Web.UI.WebControls.Label Label7;

protected System.Web.UI.WebControls.TextBox txttel2;

protected System.Web.UI.WebControls.Button Button1;

protected System.Web.UI.WebControls.Button btnAttributes;

protected System.Web.UI.WebControls.DataGrid grd;

StringBuilder str;

private void Page_Load(object sender, System.EventArgs e)

{

if(!IsPostBack)

{

this.Bind();

}

//this.btndel.Attributes.Add("onclick","javasrcipt:return confirm('delete?');");

}

Web 窗体设计器生成的代码

private void Bind()

{

DataSet ds = new DataSet();

ds.ReadXml(Server.MapPath("people.xml"));

grd.DataSource = ds.Tables[0].DefaultView;

grd.DataBind();

XmlDocument doc = new XmlDocument();

doc.Load(Server.MapPath("people.xml"));

XmlNodeList elemlist = doc.GetElementsByTagName("Name");

this.ddlName.Items.Clear();

for(int i = 0; i<elemlist.Count;i++)

{

this.ddlName.Items.Add(elemlist[i].InnerXml);

}

//Response.Write(doc.DocumentElement.SelectSingleNode("person[Name='accp']/Tel").InnerXml);

}

private void btnQuery_Click(object sender, System.EventArgs e)

{

XmlDocument doc = new XmlDocument();

doc.Load(Server.MapPath("people.xml"));

if(doc.SelectSingleNode("//person[Name='"+this.ddlName.SelectedItem.Text+"' ]/Tel") != null)

{

this.lblTel.Text = doc.SelectSingleNode("//person[Name='"+this.ddlName.SelectedItem.Text+"' ]/Tel").InnerXml;

}

else

{

this.lblTel.Text = "没有联系电话";

}

private void btndel_Click(object sender, System.EventArgs e)

{

XmlDocument xmlDoc = new XmlDocument();

xmlDoc.Load(Server.MapPath("people.xml"));

// XmlNodeList xnlist = xmlDoc.SelectSingleNode("people").ChildNodes;

// foreach(XmlNode xnode in xnlist)

// {

// XmlElement xe = (XmlElement)xnode;

// XmlNodeList nodes = xe.GetElementsByTagName("Name");

// if(nodes.Count > 0 )

// {

// if(nodes[0].InnerText == this.ddlName.SelectedItem.Text)

// xe.RemoveAll();

// break;

// }

//XmlNode node = xmlDoc.DocumentElement.SelectSingleNode("person[Name='"+this.ddlName.SelectedItem.Text+"' ]");

if(this.txtname.Text=="")

{

Response.Write("<script language='javascript'>alert('请输入.....!');</script>");

}

else

{

XmlNode node = xmlDoc.DocumentElement.SelectSingleNode("person[Name='"+this.txtname.Text+"' ]");

if(node != null)

{

xmlDoc.DocumentElement.RemoveChild(node);

xmlDoc.Save(Server.MapPath("people.xml"));

this.Bind();

}

else

{

Response.Write("<script language='javascript'>alert('此用户不存在!');</script>");

}

private void btnAdd_Click(object sender, System.EventArgs e)

{

XmlDocument xmldoc = new XmlDocument();

xmldoc.Load(Server.MapPath("people.xml"));

XmlNodeList xnlist = xmldoc.SelectSingleNode("people").ChildNodes;

for(int i = 0; i < xnlist.Count; i++)

{

XmlNode node = xmldoc.DocumentElement.SelectNodes("//person/@id")[i];

if(this.txtid.Text==node.InnerText)

{

Response.Write("<script language='javascript'>alert('此ID号已存在！');</script>");

return;

}

//----创建元素------

XmlElement name = xmldoc.CreateElement("Name");

XmlElement address = xmldoc.CreateElement("Address");

XmlElement tel = xmldoc.CreateElement("Tel");

XmlElement email = xmldoc.CreateElement("Email");

XmlElement person = xmldoc.CreateElement("person");

//----赋值------

name.InnerText = this.txtName2.Text.Trim();

address.InnerText = this.txtaddress.Text.Trim();

tel.InnerText = this.txttel.Text.Trim();

email.InnerText = this.txtemail.Text.Trim();

person.SetAttribute("id",this.txtid.Text.Trim());

person.AppendChild(name);

person.AppendChild(address);

person.AppendChild(tel);

person.AppendChild(email);

xmldoc.DocumentElement.AppendChild(person);

xmldoc.Save(Server.MapPath("people.xml"));

this.Bind();

}

private void Button1_Click(object sender, System.EventArgs e)

{

XmlDocument xmldoc = new XmlDocument();

xmldoc.Load(Server.MapPath("people.xml"));

XmlNode node = xmldoc.DocumentElement.SelectSingleNode("person[Name='"+ this.ddlName.SelectedItem.Text + "']/Tel");

node.InnerText = this.txttel2.Text.Trim();

xmldoc.Save(Server.MapPath("people.xml"));

this.Bind();

}

private void btnAttributes_Click(object sender, System.EventArgs e)

{

XmlDocument xmldoc = new XmlDocument();

xmldoc.Load(Server.MapPath("people.xml"));

XmlElement root = xmldoc.DocumentElement;

for(int i = 0; i<root.ChildNodes.Count;i++)

{

str = new StringBuilder();

str.Append(root.ChildNodes[i].Attributes[0].InnerText);

//Response.Write(str);

//Response.Write("<script language = 'javascript'>alert("+str+");</script>");

}

Response.Write(str);

}

XML文件

<? xml version="1.0" encoding="gb2312" ?>

< people >

< person id ="e09" city ="xuzhou" >

< Name > ljy </ Name >

< Address > jangsu dafeng </ Address >

< Tel > 138 </ Tel >

< Email > ljy@126.com </ Email >

</ person >

< person id ="e10" city ="nanjing" >

< Name > accp </ Name >

< Address > xuzhou </ Address >

< Tel > 9999 </ Tel >

< Email > accp@126.com </ Email >

</ person >

< person id ="e11" >

< Name > jack </ Name >

< Address > jiangsu najing </ Address >

< Tel > 025-987 </ Tel >

< Email > jack@126.com </ Email >

</ person >

< person id ="12" >

< Name > xxxuuu </ Name >

< Address > jiang su dafeng </ Address >

< Tel > 123 </ Tel >

< Email > 123@yahoo.com </ Email >

</ person >

</ people >