第一步：在项目文件里创建db文件夹，在db文件夹里创建db.xml文档。db.xml结构只包含：<Group></Group>
第二步：新建添加留言和显示留言的两个画面：MessageAdd.aspx和MessageList.aspx。下面是两个页面的 前台和后台源码。
1.MessageAdd.aspx
<%@ Page language="c#" Codebehind="MessageAdd.aspx.cs" AutoEventWireup="false" Inherits="XMLGuest.MessageAdd" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>MessageAdd</title>
<meta content="Microsoft Visual Studio 7.0" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
<style>.Txt1 {
FONT-SIZE: 12px
}
</style>
</HEAD>
<body>
<form id="MessageAdd" method="post" runat="server">
<FONT face="宋体">
<P> </P>
<P align="center">
<TABLE class="Txt1" id="Table1" cellSpacing="1" cellPadding="4" width="749" bgColor="#efefef"
border="0">
<TR>
<TD bgColor="#e8dabd">您的大名</TD>
<TD style="WIDTH: 508px" bgColor="#ffffff"><asp:textbox id="TextBoxUName" runat="server" LeaveSQL="False" LeaveFormat="False" HtmlEncode="False"
Width="519px" MaxLength="10" CssClass="TextAreaClass"></asp:textbox></TD>
<TD bgColor="#ffffff" colSpan="1" rowSpan="1"></TD>
</TR>
<TR>
<TD bgColor="#e8dabd" colSpan="1" rowSpan="1">E-Mail</TD>
<TD style="WIDTH: 505px" bgColor="#ffffff">
<P><asp:textbox id="TextBoxMail" runat="server" LeaveSQL="False" LeaveFormat="False" HtmlEncode="False"
Width="519px" MaxLength="30" CssClass="TextAreaClass"></asp:textbox></P>
</TD>
<TD bgColor="#ffffff" colSpan="1" rowSpan="1"><BR>
</TD>
</TR>
<TR>
<TD bgColor="#e8dabd" colSpan="1" rowSpan="1">内容</TD>
<TD style="WIDTH: 505px" bgColor="#ffffff">
<P><asp:textbox id="TextBoxTxt" runat="server" LeaveSQL="False" LeaveFormat="True" HtmlEncode="False"
Width="519px" TextMode="MultiLine" Height="160px"></asp:textbox></P>
</TD>
<TD bgColor="#ffffff" colSpan="1" rowSpan="1"></TD>
</TR>
</TABLE>
</P>
<P align="center"><asp:button id="Button1" runat="server" CssClass="TextAreaClass" Text=" 提交 "></asp:button>
<INPUT class="TextAreaClass" onclick="window.location.replace('MessageList.aspx')" type="button"
value=" 返回 "></P>
</FONT>
</form>
</body>
</HTML>
MessageAdd.cs
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;
namespace XMLGuest
{
/// <summary>
/// MessageAdd 的摘要说明。
/// </summary>
public class MessageAdd : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox TextBoxUName;
protected System.Web.UI.WebControls.TextBox TextBoxMail;
protected System.Web.UI.WebControls.TextBox TextBoxTxt;
protected System.Web.UI.WebControls.Button Button1;
private void Page_Load(object sender, System.EventArgs e)
{
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
XmlDocument doc = new XmlDocument();
doc.Load(MapPath("db\\db.xml"));
XmlNode node = doc.CreateElement("Item");
XmlAttribute xmlattr = doc.CreateAttribute("UserName");
xmlattr.Value = XmlConvert.DecodeName(TextBoxUName.Text);
node.Attributes.Append(xmlattr);
xmlattr = doc.CreateAttribute("UserEmail");
xmlattr.Value = XmlConvert.DecodeName(TextBoxMail.Text);
node.Attributes.Append(xmlattr);
xmlattr = doc.CreateAttribute("Content");
xmlattr.Value = XmlConvert.DecodeName(TextBoxTxt.Text);
node.Attributes.Append(xmlattr);
xmlattr = doc.CreateAttribute("SendTime");
xmlattr.Value = XmlConvert.DecodeName(DateTime.Now.ToString());
node.Attributes.Append(xmlattr);
doc.ChildNodes[0].AppendChild(node);
doc.Save(MapPath("db\\db.xml"));
Response.Redirect("MessageList.aspx");
}
}
}
2.MessageList.aspx
<%@ Page language="c#" Codebehind="MessageList.aspx.cs" AutoEventWireup="false" Inherits="XMLGuest.MessageList" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
&nb
