XML 增、删、改和查示例

来源：Linuxdby.com 作者：Webmaster 时间：2007-06-04 点击： [收藏] [投稿]

    {
     xe.RemoveAll();//删除该节点的全部内容
    }
   }
   xmlDoc.Save("bookstore.xml");

//====================

最后结果为：

<?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>

4、显示所有数据。

XmlNode xn=xmlDoc.SelectSingleNode("bookstore");

   XmlNodeList xnl=xn.ChildNodes;

   foreach(XmlNode xnf in xnl)
   {
    XmlElement xe=(XmlElement)xnf;
    Console.WriteLine(xe.GetAttribute("genre"));//显示属性值
    Console.WriteLine(xe.GetAttribute("ISBN"));

    XmlNodeList xnf1=xe.ChildNodes;
    foreach(XmlNode xn2 in xnf1)
    {
     Console.WriteLine(xn2.InnerText);//显示子节点点文本
    }
   }

留做参考,原文地址http://blog.yesky.com/75/richsee/1211075.shtml

2前台代码：html

<%@ 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="宋体">
                <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">新邮件地址：</asp:Label>
                <asp:Label id="Label2" style="Z-INDEX: 107; LEFT: 333px; POSITION: absolute; TOP: 274px" runat="server" Width="83px" Height="21px">邮件地址：</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="删除"></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="查询"></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>

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