1、Default.aspx代码如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" ValidateRequest="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table id="TABLE1" runat="server" border="0" cellpadding="0" cellspacing="0">
<tr>
<td style="width: 393px">
收信:<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
主题:<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />
内容:<asp:TextBox ID="TextBox3" runat="server" Height="154px" TextMode="MultiLine"
Width="336px"></asp:TextBox><br />
<asp:Button ID="Button1" runat="server" Text="发送" OnClick="Button1_Click" /></td>
</tr>
</table>
</div>
<table id="Table2" runat="server" border="0" cellpadding="0" cellspacing="0" visible="false">
<tr>
<td align="center" style="width: 400px">
<asp:Label ID="Label1" runat="server" ForeColor="Red" Text="恭喜您，发表成功!"></asp:Label><br />
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" ValidateRequest="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table id="TABLE1" runat="server" border="0" cellpadding="0" cellspacing="0">
<tr>
<td style="width: 393px">
收信:<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
主题:<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />
内容:<asp:TextBox ID="TextBox3" runat="server" Height="154px" TextMode="MultiLine"
Width="336px"></asp:TextBox><br />
<asp:Button ID="Button1" runat="server" Text="发送" OnClick="Button1_Click" /></td>
</tr>
</table>
</div>
<table id="Table2" runat="server" border="0" cellpadding="0" cellspacing="0" visible="false">
<tr>
<td align="center" style="width: 400px">
<asp:Label ID="Label1" runat="server" ForeColor="Red" Text="恭喜您，发表成功!"></asp:Label><br />
