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25.3.1 更新会议登记应用程序(1)
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C#高级编程（第3版）
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25.3.1 更新会议登记应用程序(1)
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<div style='float:left;width:49%'>·<a href='100165681.htm'>25.2 ASP.NET Web窗体(2)</a></div><div style='float:right;width:49%'>·<a href='100165682.htm'>25.2 ASP.NET Web窗体(3)</a></div><div style='float:left;width:49%'>·<a href='100165683.htm'>25.3 ADO.NET和数据绑定</a></div><div style='float:right;width:49%'>·<a href='100165685.htm'>25.3.1 更新会议登记应用程序(2)</a></div><div style='float:left;width:49%'>·<a href='100165686.htm'>25.3.2 数据绑定的更多内容</a></div><div style='float:right;width:49%'>·<a href='100165687.htm'>25.4 应用程序配置</a></div></div>
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<link href="css.css" rel="stylesheet" type="text/css" /> <h3 style='margin-top:8.15pt;margin-right:0cm;FTEL:8.15pt;margin-left:
0cm'><a FTEL="_Toc507815271"></a><a FTEL="_Toc507815251"><span lang=EN-US>25.3.1
</span></a><span style='font-family:黑体'>更新</span><span style='font-family:
黑体'>会议登记应用程序</span></h3>
<p class=MsoNormal><span style='font-family:宋体'>为了独立上一个示例，创建一个新的</span><span
lang=EN-US>Web</span><span style='font-family:宋体'>应用程序</span><span lang=EN-US>PCSWebApp3</span><span
style='font-family:宋体'>，复制前面创建的</span><span lang=EN-US>PCSWebApp2</span><span
style='font-family:宋体'>应用程序中的代码。在开始编写新代码前，先看看要访问的数据库。</span></p>
<h4 style='FTEL:21.45pt'><span lang=EN-US>1. </span><span
style='font-family:黑体'>数据库</span></h4>
<p class=MsoNormal><a FTEL=database><span style='font-family:宋体'>在本例中，使用一个</span><span
lang=EN-US>Microsoft Access</span></a><span style='font-family:宋体'>数据库</span><span
lang=EN-US>PCSWebApp3.mdb</span><span style='font-family:宋体'>，该数据库可以从本书的代码中下载。企业级的应用程序应使用</span><span
lang=EN-US>SQL Server</span><span style='font-family:宋体'>数据库，但涉及到的技术是相同的，使用</span><span
lang=EN-US>Access</span><span style='font-family:宋体'>数据库会使测试更简单一些。后面会在代码中指出它们的区别。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>该数据库包含</span><span lang=EN-US>3</span><span
style='font-family:宋体'>个表：</span></p>
<p class=1 style='margin-left:37.55pt;FTEL:-16.1pt'><span lang=EN-US>●<span
style='font:7.0pt "Times New Roman"'> </span></span><span
lang=EN-US>Attendees</span><span style='font-family:宋体'>包含事件参加者的一个列表。</span></p>
<p class=1 style='margin-left:37.55pt;FTEL:-16.1pt'><span lang=EN-US>●<span
style='font:7.0pt "Times New Roman"'> </span></span><span
lang=EN-US>Rooms</span><span style='font-family:宋体'>包含会议室的一个列表。</span></p>
<p class=1 style='margin-left:37.55pt;FTEL:-16.1pt'><span lang=EN-US>●<span
style='font:7.0pt "Times New Roman"'> </span></span><span
lang=EN-US>Events</span><span style='font-family:宋体'>包含登记事件的一个列表。</span></p>
<p class=MsoNormal><span lang=EN-US>(1) </span><span style='font-family:宋体'>参加者</span></p>
<p class=MsoNormal><span lang=EN-US>Attendees</span><span style='font-family:
宋体'>表包含表</span><span lang=EN-US>25-3</span><span style='font-family:宋体'>所示的列。</span></p>
<p class=a5 style='margin-top:3.25pt'><span style='font-family:黑体'>表</span><span
lang=EN-US> 25-3</span></p>
<div align=center>
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width=584
style='width:437.85pt;border-collapse:collapse;border:none'>
<tr>
<td width=106 valign=top style='width:79.8pt;border:solid windowtext 1.0pt;
border-left:none;padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a2><span style='font-family:黑体'>列</span></p>
</td>
<td width=204 valign=top style='width:153.3pt;border:solid windowtext 1.0pt;
border-left:none;padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a2><span style='font-family:黑体'>类</span><span lang=EN-US>
</span><span style='font-family:黑体'>型</span></p>
</td>
<td width=273 valign=top style='width:204.75pt;border-top:solid windowtext 1.0pt;
border-left:none;border-bottom:solid windowtext 1.0pt;border-right:none;
padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a2><span style='font-family:黑体'>说</span><span lang=EN-US>
</span><span style='font-family:黑体'>明</span></p>
</td>
</tr>
<tr>
<td width=106 valign=top style='width:79.8pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US>ID</span></p>
</td>
<td width=204 valign=top style='width:153.3pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US>AutoNumber</span><span
style='font-family:宋体'>，主键</span></p>
</td>
<td width=273 valign=top style='width:204.75pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span style='font-family:宋体'>参加者的身份标识号码</span></p>
</td>
</tr>
<tr>
<td width=106 valign=top style='width:79.8pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US>Name</span></p>
</td>
<td width=204 valign=top style='width:153.3pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US>Text</span><span
style='font-family:宋体'>，必选，</span><span lang=EN-US>50</span><span
style='font-family:宋体'>个字符</span><span lang=EN-US> </span></p>
</td>
<td width=273 valign=top style='width:204.75pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span style='font-family:宋体'>参加者的姓名</span></p>
</td>
</tr>
<tr>
<td width=106 valign=top style='width:79.8pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US>Email</span></p>
</td>
<td width=204 valign=top style='width:153.3pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US>Text</span><span
style='font-family:宋体'>，可选，</span><span lang=EN-US>50</span><span
style='font-family:宋体'>个字符</span></p>
</td>
<td width=273 valign=top style='width:204.75pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:.55pt 9.9pt .55pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span style='font-family:宋体'>参加者的电子邮件地址</span></p>
</td>
</tr>
</table>
</div>
<p class=MsoNormal><span style='font-family:宋体'>该数据库包含</span><span lang=EN-US>20</span><span
style='font-family:宋体'>个参加者的信息，他们都有电子邮件地址。在一个比较高级的应用程序中，电子邮件会自动发送给已登记的参加者，我们把这个任务留给您来完成，其中使用的技巧可以在本书的其他地方找到。</span></p>
<p class=MsoNormal><span lang=EN-US>(2) </span><span style='font-family:宋体'>会议室</span></p>
<p class=MsoNormal><span lang=EN-US>Rooms</span><span style='font-family:宋体'>表包含表</span><span
lang=EN-US>25-4</span><span style='font-family:宋体'>所示的列。</span></p>
<p class=a5 style='margin-top:3.25pt'><span style='font-family:黑体'>表</span><span
lang=EN-US> 25-4</span></p>
<div align=center>
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width=583
style='width:437.05pt;margin-left:5.2pt;border-collapse:collapse;border:none'>
<tr>
<td width=148 valign=top style='width:111.05pt;border:solid windowtext 1.0pt;
border-left:none;padding:0cm 9.9pt 0cm 9.9pt'>
<p class=a2><span style='font-family:黑体'>列</span></p>
</td>
<td width=189 valign=top style='width:5.0cm;border:solid windowtext 1.0pt;
border-left:none;padding:0cm 9.9pt 0cm 9.9pt'>
<p class=a2><span style='font-family:黑体'>类</span><span lang=EN-US>
</span><span style='font-family:黑体'>型</span></p>
</td>
<td width=246 valign=top style='width:184.25pt;border-top:solid windowtext 1.0pt;
border-left:none;border-bottom:solid windowtext 1.0pt;border-right:none;
padding:0cm 9.9pt 0cm 9.9pt'>
<p class=a2><span style='font-family:黑体'>说</span><span lang=EN-US>
</span><span style='font-family:黑体'>明</span></p>
</td>
</tr>
<tr>
<td width=148 valign=top style='width:111.05pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 9.9pt 0cm 9.9pt'>
<p class=MsoNormal style='FTEL:4.0pt'><span lang=EN-US
style='font-size:9.0pt'>ID</span></p>
</td>
<td width=189 valign=top style='width:5.0cm;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 9.9pt 0cm 9.9pt'>
<p class=MsoNormal style='FTEL:4.0pt'><span lang=EN-US
style='font-size:9.0pt'>AutoNumber</span><span style='font-size:9.0pt;
font-family:宋体'>，主键</span></p>
</td>
<td width=246 valign=top style='width:184.25pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:0cm 9.9pt 0cm 9.9pt'>
<p class=MsoNormal style='FTEL:4.0pt'><span style='font-size:9.0pt;
font-family:宋体'>房间标识号码</span></p>
</td>
</tr>
<tr>
<td width=148 valign=top style='width:111.05pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 9.9pt 0cm 9.9pt'>
<p class=MsoNormal style='FTEL:4.0pt'><span lang=EN-US
style='font-size:9.0pt'>Room</span></p>
</td>
<td width=189 valign=top style='width:5.0cm;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 9.9pt 0cm 9.9pt'>
<p class=MsoNormal style='FTEL:4.0pt'><span lang=EN-US
style='font-size:9.0pt'>Text</span><span style='font-size:9.0pt;font-family:
宋体'>，必选，</span><span lang=EN-US style='font-size:9.0pt'>50</span><span
style='font-size:9.0pt;font-family:宋体'>个字符</span><span lang=EN-US
style='font-size:9.0pt'> </span></p>
</td>
<td width=246 valign=top style='width:184.25pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:0cm 9.9pt 0cm 9.9pt'>
<p class=MsoNormal style='FTEL:4.0pt'><span style='font-size:9.0pt;
font-family:宋体'>房间名</span></p>
</td>
</tr>
</table>
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