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25.1 ASP.NET概述
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C#高级编程（第3版）
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25.1 ASP.NET概述
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2006-10-13 14:41:00
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<h1 id="divCurrentNode" style="color: #b83507; width: 100%; text-align: left; font-size: 12px; padding-left: 2px">当前章节:<a href='100165679.htm'><font color='red'>25.1 ASP.NET概述</font></a></h1>
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<div style='float:left;width:49%'>·<a href='100165651.htm'>23.8.3 读写DiffGram</a></div><div style='float:right;width:49%'>·<a href='100165652.htm'>23.9 在XML中串行化对象</a></div><div style='float:left;width:49%'>·<a href='100165653.htm'>23.10 小结</a></div><div style='float:right;width:49%'>·<a href='100165680.htm'>25.2 ASP.NET Web窗体(1)</a></div><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>
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<link href="css.css" rel="stylesheet" type="text/css" /><p class=MsoNormal><a FTEL=ASPNET><span style='font-family:宋体'>如果您是</span><span
lang=EN-US>C#</span></a><span style='font-family:宋体'>和</span><span lang=EN-US>.NET</span><span
style='font-family:宋体'>的新手，肯定不理解为什么本书要包含介绍</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>的内容。这是一种全新的语言，对吗？但实际上并非如此。使用</span><span lang=EN-US>C#</span><span
style='font-family:宋体'>可以创建</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>页面。</span></p>
<p class=MsoNormal><span lang=EN-US>ASP.NET</span><span style='font-family:
宋体'>是</span><span lang=EN-US>.NET Framework</span><span style='font-family:
宋体'>的一部分。在通过</span><span lang=EN-US>HTTP</span><span style='font-family:宋体'>请求建立文档时，它可以在</span><span
lang=EN-US>Web</span><span style='font-family:宋体'>服务器上动态创建文档。该文档主要是</span><span
lang=EN-US>HTML</span><span style='font-family:宋体'>文档，但也可以为</span><span
lang=EN-US>WAP</span><span style='font-family:宋体'>浏览器创建</span><span lang=EN-US>WML</span><span
style='font-family:宋体'>文档，或者创建</span><span lang=EN-US>MIME</span><span
style='font-family:宋体'>类型的文档。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>在某些方面，</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>类似于许多其他技术，例如</span><span lang=EN-US>PHP</span><span
style='font-family:宋体'>、</span><span lang=EN-US>ASP</span><span
style='font-family:宋体'>、</span><span lang=EN-US>ColdFusion</span><span
style='font-family:宋体'>等，但它们有<span style='letter-spacing:.1pt'>一个重要的区别。顾名思义，</span></span><span
lang=EN-US style='letter-spacing:.1pt'>ASP.NET</span><span style='font-family:
宋体;letter-spacing:.1pt'>可以与</span><span lang=EN-US style='letter-spacing:.1pt'>.NET
Framework</span><span style='font-family:宋体;letter-spacing:.1pt'>完全集成，它包含了对</span><span
lang=EN-US style='letter-spacing:.1pt'>C#</span><span style='font-family:宋体;
letter-spacing:.1pt'>的支持。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>您可能使用过动态生成信息的</span><span
lang=EN-US>ASP</span><span style='font-family:宋体'>技术。这种技术使用脚本语言，例如</span><span
lang=EN-US>VBScript </span><span style='font-family:宋体'>或</span><span
lang=EN-US> JScript</span><span style='font-family:宋体'>来编程，结果却不是很好。但对于那些习惯于“正确的”已编译编程语言的人来说，这种技术很笨拙，肯定会导致性能的损失。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>与更高级的编程语言相比，一个主要区别是</span><span
lang=EN-US>ASP.NET</span><span style='font-family:宋体'>提供了完整的服务器端对象模型，可以在运行期间使用。</span><span
lang=EN-US>ASP.NET</span><span style='font-family:宋体'>可以在环境中把页面上的所有控件作为对象来访问。在服务器端，还可以访问其他</span><span
lang=EN-US>.NET</span><span style='font-family:宋体'>类，与许多有用的服务集成起来。在页面上使用的控件有许多功能，实际上可以完成</span><span
lang=EN-US>Windows Form</span><span style='font-family:宋体'>类的几乎所有的功能，有非常大的灵活性。因此，生成</span><span
lang=EN-US>HTML</span><span style='font-family:宋体'>内容的</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>通常称为</span><span lang=EN-US>Web</span><span
style='font-family:宋体'>窗体。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>本章将详细介绍</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>，包括</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>如何工作，</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>可以完成什么任务，以及什么地方适合使用</span><span lang=EN-US>C#</span><span
style='font-family:宋体'>。</span></p>
<h3 style='margin-top:11.4pt;margin-right:0cm;FTEL:11.4pt;margin-left:
0cm'><a FTEL="_Toc507815266"></a><a FTEL="_Toc507815246"><span lang=EN-US>25.1 ASP.NET</span></a><span
style='font-family:楷体_GB2312'>概述</span></h3>
<p class=MsoNormal><span lang=EN-US>ASP.NET</span><span style='font-family:
宋体'>使用</span><span lang=EN-US>Internet Information Server (IIS)</span><span
style='font-family:宋体'>来传送内容，以响应</span><span lang=EN-US>HTTP</span><span
style='font-family:宋体'>请求。</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>页面在</span><span lang=EN-US>.aspx</span><span
style='font-family:宋体'>文件中，其基本结构如图</span><span lang=EN-US>25-1</span><span
style='font-family:宋体'>所示。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>在</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>处理过程中，可以访问所有的</span><span lang=EN-US>.NET</span><span
style='font-family:宋体'>类、</span><span lang=EN-US>C#</span><span
style='font-family:宋体'>或其他语言创建的定制组件、数据库等。实际上，这与运行</span><span lang=EN-US>C#</span><span
style='font-family:宋体'>应用程序一样；在</span><span lang=EN-US>ASP.NET</span><span
style='font-family:宋体'>中使用</span><span lang=EN-US>C#</span><span
style='font-family:宋体'>就是在运行</span><span lang=EN-US>C#</span><span
style='font-family:宋体'>程序。</span></p>
<p class=MsoNormal><span lang=EN-US>ASP.NET</span><span style='font-family:
宋体'>文件可以包含下述内容：</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
style='font-family:宋体'>服务器的处理指令</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>C#</span><span style='font-family:宋体'>、</span><span lang=EN-US>VB.NET</span><span
style='font-family:宋体'>、</span><span lang=EN-US>JScript.NET</span><span
style='font-family:宋体'>代码或</span><span lang=EN-US>.NET Framework</span><span
style='font-family:宋体'>支持的其他语言的代码</span></p>
<p align=center><span style='position:relative;z-index:4'><span style='left:0px;
position:absolute;left:87px;top:-3px;width:431px;height:241px'><img width=431
height=241 src="25/image001.gif"></span></span><span style='position:
absolute;z-index:1;left:0px;margin-left:86px;margin-top:8px;width:85px;
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<p class=MsoNormal style='FTEL:0cm'><span lang=EN-US
style='font-size:7.5pt'>.aspx</span><span style='font-size:7.5pt;
font-family:宋体'>资源的</span></p>
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