用一個留言簿說明C#操作XML的完全過程
來源:互聯網
上載者:User
xml|過程
第一步:在專案檔裡建立db檔案夾,在db檔案夾裡建立db.xml文檔。db.xml結構只包含:<Group></Group>
第二步:建立添加留言和顯示留言的兩個畫面:MessageAdd.aspx和MessageList.aspx。下面是兩個頁面的 前台和後台源碼。
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="宋體">
<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">內容</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 的摘要說明。
/// </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:該調用是 ASP.NET Web 表單設計器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 設計器支援所需的方法 - 不要使用代碼編輯器修改
/// 此方法的內容。
/// </summary>
private void InitializeComponent()
{
this.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>
<title>MessageList</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">
<style>
.body { FONT-SIZE: 12px }
.td1 { FONT-SIZE: 12px }
</style>
</HEAD>
<body class="body">
<form id="MessageList" method="post" runat="server">
<P align="right">
<asp:HyperLink id="GrowHyperLink1" runat="server" Text="[留言]" NavigateUrl="MessageAdd.aspx"></asp:HyperLink>
</P>
<P align="center"><FONT face="宋體"></FONT><FONT face="宋體"></FONT><BR>
<asp:DataGrid id="DataList1" runat="server" AutoGenerateColumns="False" ShowHeader="False" PageSize="15"
BorderStyle="None" BorderWidth="0px" CellPadding="4" Font-Size="12px">
<Columns>
<asp:TemplateColumn>
<ItemTemplate>
<TABLE id="Table7" borderColor="#efefef" cellSpacing="0" cellPadding="4" width="749" bgColor="#efefef"
border="1">
<TR class="td1" bgColor="#fafafa">
<TD style="WIDTH: 200px" bgColor="#ffffff"><STRONG>姓名:</STRONG>
<asp:Label id=Label5 runat="server" Text=<%# DataBinder.Eval(Container, "DataItem.UserName").ToString() %>>
</asp:Label>
</TD>
<TD style="WIDTH: 150px" bgColor="#ffffff"><STRONG><FONT face="宋體">時間</FONT></STRONG><STRONG><FONT face="宋體">:</FONT></STRONG>
<asp:Label id=Label4 runat="server" Text=<%# DataBinder.Eval(Container, "DataItem.SendTime").ToString() %>>
</asp:Label></TD>
<TD bgColor="#ffffff"><STRONG>E-Mail</STRONG><STRONG>:
<asp:HyperLink id=HyperLink1 runat="server" NavigateUrl=<%# "mailto:"+DataBinder.Eval(Container, "DataItem.UserEmail").ToString() %> Text=<%# DataBinder.Eval(Container, "DataItem.UserEmail").ToString() %>>
</asp:HyperLink></STRONG></TD>
</TR>
<TR class="td1">
<TD bgColor="#ffffff" colSpan="3">
<asp:Label id=Label1 runat="server" Text=<%# DataBinder.Eval(Container, "DataItem.Content").ToString() %>>
</asp:Label></TD>
</TR>
</TABLE>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
<PagerStyle Visible="False"></PagerStyle>
</asp:DataGrid>
</P>
</form>
</body>
</HTML>
MessageList.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.IO;
using System.Xml;
namespace XMLGuest
{
/// <summary>
/// MessageList 的摘要說明。
/// </summary>
public class MessageList : System.Web.UI.Page
{
protected HyperLink GrowHyperLink1;
protected System.Web.UI.WebControls.DataGrid DataList1;
private void Page_Load(object sender, System.EventArgs e)
{
FileStream stream = new FileStream(Server.MapPath("db\\db.xml"),FileMode.Open);
try
{
XmlDataDocument doc = new XmlDataDocument();
doc.DataSet.ReadXml(new StreamReader(stream));
if(doc.DataSet.Tables.Count != 0 && doc.DataSet.Tables[0].Rows.Count!=0)
{
DataList1.DataSource = doc.DataSet.Tables[0].DefaultView ;
DataList1.DataBind();
}
stream.Close();
}
catch(Exception ding)
{
Response.Write(ding.Message);
}
finally
{
stream.Close();
}
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN:該調用是 ASP.NET Web 表單設計器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 設計器支援所需的方法 - 不要使用代碼編輯器修改
/// 此方法的內容。
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
}