C#(Asp.net)对XML文件增、删、改、查(基于DOM)

技术2022-05-11 66

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 >

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