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?xml version="1.0" encoding="gb2312"?> |
1、往bookstore>節點中插入一個book>節點：
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XmlDocument xmlDoc=new XmlDocument(); |
//================
結果為：
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?xml version="1.0" encoding="gb2312"?> |
2、修改節點：將genre屬性值為“李贊紅“的節點的genre值改為“update李贊紅”，將該節點的子節點author>的文本修改為“亞勝”。
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XmlNodeList nodeList=xmlDoc.SelectSingleNode("bookstore").ChildNodes;//獲取bookstore節點的所有子節點 |
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?xml version="1.0" encoding="gb2312"?> |
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XmlNodeList xnl=xmlDoc.SelectSingleNode("bookstore").ChildNodes; |
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if(xe.GetAttribute("genre")=="fantasy") |
| ?xml version="1.0" encoding="gb2312"?> bookstore> book ISBN="2-3631-4"> title>Oberon's Legacy/title> author>Corets, Eva/author> price>5.95/price> /book> book> /book> /bookstore> |
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XmlNode xn=xmlDoc.SelectSingleNode("bookstore"); |
%
@ Page language="c#" Codebehind="Main.aspx.cs" AutoEventWireup="false" Inherits="DsAndXML.OpXMLFile.Main" %>
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >HTML> HEAD> title>Main/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="Main" method="post" runat="server"> FONT face="宋體"> asp:DataGrid id="dgShow" style="Z-INDEX: 100; LEFT: 113px; POSITION: absolute; TOP: 32px" runat="server" Width="480px" Height="178px">/asp:DataGrid> asp:Label id="Label3" style="Z-INDEX: 111; LEFT: 187px; POSITION: absolute; TOP: 383px" runat="server" Width="120px" Height="21px">新郵件地址：/asp:Label> asp:Label id="Label2" style="Z-INDEX: 107; LEFT: 333px; POSITION: absolute; TOP: 274px" runat="server" Width="83px" Height="21px">郵件地址：/asp:Label> asp:Button id="btnAdd" style="Z-INDEX: 104; LEFT: 298px; POSITION: absolute; TOP: 324px" runat="server" Text="添加">/asp:Button> asp:Button id="btnDelete" style="Z-INDEX: 103; LEFT: 199px; POSITION: absolute; TOP: 324px" runat="server" Text="刪除">/asp:Button> asp:Button id="btnChange" style="Z-INDEX: 102; LEFT: 102px; POSITION: absolute; TOP: 382px" runat="server" Text="修改">/asp:Button> asp:Button id="btnQuery" style="Z-INDEX: 101; LEFT: 101px; POSITION: absolute; TOP: 324px" runat="server" Text="查詢">/asp:Button> asp:DropDownList id="ddlName" style="Z-INDEX: 105; LEFT: 210px; POSITION: absolute; TOP: 274px" runat="server" Width="95px" Height="78px">/asp:DropDownList> asp:Label id="Label1" style="Z-INDEX: 106; LEFT: 100px; POSITION: absolute; TOP: 274px" runat="server" Width="83px" Height="21px">姓名：/asp:Label> asp:Label id="lbEmail" style="Z-INDEX: 109; LEFT: 459px; POSITION: absolute; TOP: 274px" runat="server" Width="231px">/asp:Label> asp:TextBox id="tbNewMail" style="Z-INDEX: 110; LEFT: 330px; POSITION: absolute; TOP: 381px" runat="server" Width="208px" Height="26px">/asp:TextBox>/FONT> /form> /body>/HTML>?xml version="1.0" standalone="yes"?>dbGuest> User> Name>aaa/Name> City>shanghai/City> Email>aaa@263.net/Email> Message>ok/Message> STime>2004-07-12T00:00:00.0000000+08:00/STime> /User> User> Name>shaoazhd/Name> City>beijing/City> Email>sss@22.net/Email> Message>afsa/Message> STime>2004-7-12 15:07:39/STime> /User> User> Name>Guset/Name> City>上海/City> Email>sfaf@22.net/Email> /User> User> Name>Guset/Name> City>上海/City> Email>ss@22.net/Email> /User>/dbGuest>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;namespace DsAndXML.OpXMLFile{
/**//// summary>
/// Main 的摘要說明。
/// /summary> public class Main : System.Web.UI.Page { protected System.Web.UI.WebControls.Button btnQuery; protected System.Web.UI.WebControls.Button btnChange; protected System.Web.UI.WebControls.Button btnDelete; protected System.Web.UI.WebControls.Button btnAdd; protected System.Web.UI.WebControls.DropDownList ddlName; protected System.Web.UI.WebControls.Label Label1; protected System.Web.UI.WebControls.Label Label2; protected System.Web.UI.WebControls.Label lbEmail; protected System.Web.UI.WebControls.TextBox tbNewMail; protected System.Web.UI.WebControls.Label Label3; protected System.Web.UI.WebControls.DataGrid dgShow; private void Page_Load(object sender, System.EventArgs e) { // 在此處放置用戶代碼以初始化頁面 if(!IsPostBack) Bind(); } private void Bind() { DataSet ds = new DataSet(); ds.ReadXml(Server.MapPath(".\\db\\dbGuest.xml")); dgShow.DataSource = ds.Tables[0].DefaultView; dgShow.DataBind(); XmlDocument doc = new XmlDocument(); doc.Load(Server.MapPath(".\\db\\dbGuest.xml")); XmlNodeList elemList = doc.GetElementsByTagName("Name"); ddlName.Items.Clear(); for(int i=0;ielemList.Count;i++) ddlName.Items.Add(elemList[i].InnerXml); } Web Form Designer generated code#region Web Form Designer generated code override protected void OnInit(EventArgs e) { // // CODEGEN：該調用是 ASP.NET Web 窗體設計器所必需的。 // InitializeComponent(); base.OnInit(e); } /**//// summary> /// 設計器支持所需的方法 - 不要使用代碼編輯器修改 /// 此方法的內容。 /// /summary> private void InitializeComponent() { this.btnQuery.Click += new System.EventHandler(this.btnQuery_Click); this.btnChange.Click += new System.EventHandler(this.btnChange_Click); this.btnDelete.Click += new System.EventHandler(this.btnDelete_Click); this.btnAdd.Click += new System.EventHandler(this.btnAdd_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void btnQuery_Click(object sender, System.EventArgs e) { XmlDocument doc = new XmlDocument(); doc.Load(Server.MapPath(".\\db\\dbGuest.xml")); lbEmail.Text = doc.SelectSingleNode("//User[Name='"+ddlName.SelectedItem.Text+"']").ChildNodes.Item(2).InnerText; } private void btnChange_Click(object sender, System.EventArgs e) { XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(Server.MapPath(".\\db\\dbGuest.xml")); XmlNodeList nodeList=xmlDoc.SelectSingleNode("dbGuest").ChildNodes;//獲取dbGuest節點的所有子節點 foreach(XmlNode xn in nodeList)//遍歷所有子節點 { XmlElement xe=(XmlElement)xn;//將子節點類型轉換為XmlElement類型 XmlNodeList node = xe.GetElementsByTagName("Name"); if(node.Count>0) { if(node[0].InnerText==ddlName.SelectedItem.Text) { XmlNodeList nls=xe.ChildNodes;//繼續獲取xe子節點的所有子節點 foreach(XmlNode xn1 in nls)//遍歷 { XmlElement xe2=(XmlElement)xn1;//轉換類型 if(xe2.Name=="Email")//如果找到 { xe2.InnerText=tbNewMail.Text;//則修改 break;//找到退出來就可以了 } } break; } } } xmlDoc.Save(Server.MapPath(".\\db\\dbGuest.xml")); Bind(); } private void btnDelete_Click(object sender, System.EventArgs e) { XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(Server.MapPath(".\\db\\dbGuest.xml")); XmlNodeList xnl=xmlDoc.SelectSingleNode("dbGuest").ChildNodes; foreach(XmlNode xn in xnl) { XmlElement xe=(XmlElement)xn; XmlNodeList node = xe.GetElementsByTagName("Name"); if(node.Count>0) { if(node[0].InnerText==ddlName.SelectedItem.Text) xe.RemoveAll();//刪除該節點的全部內容 break; } } xmlDoc.Save(Server.MapPath(".\\db\\dbGuest.xml")); Bind(); } private void btnAdd_Click(object sender, System.EventArgs e) { XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(Server.MapPath(".\\db\\dbGuest.xml")); XmlNode root=xmlDoc.SelectSingleNode("dbGuest");//查找dbGuest> XmlElement xe1=xmlDoc.CreateElement("User");//創建一個User>節點 XmlElement xesub1=xmlDoc.CreateElement("Name"); xesub1.InnerText="Guset";//設置文本節點 xe1.AppendChild(xesub1);//添加到User>節點中 XmlElement xesub2=xmlDoc.CreateElement("City"); xesub2.InnerText="上海"; xe1.AppendChild(xesub2); XmlElement xesub3=xmlDoc.CreateElement("Email"); xesub3.InnerText="ss@22.net"; xe1.AppendChild(xesub3); root.AppendChild(xe1);//添加到dbGuest>節點中 xmlDoc.Save(Server.MapPath(".\\db\\dbGuest.xml")); Bind(); } }
}
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