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21.1.1 命名空间
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C#高级编程（第3版）
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21.1.1 命名空间
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2006-10-13 14:41:00
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<link href="css.css" rel="stylesheet" type="text/css" /><h3 style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 0cm; MARGIN-RIGHT: 0cm; FTEL: 8.15pt"><a ftel="_Toc507815155"></a><a ftel="_Toc507815157"><span lang="EN-US">21.1.1 </span></a><span style="FONT-FAMILY: 黑体">命名空间</span></h3>
<p class="MsoNormal"><a ftel="namespaces"><span style="FONT-FAMILY: 宋体">本章所有的示例都以某种方式访问数据。下面的命名空间提供了在</span><span lang="EN-US">.NET</span></a><span style="FONT-FAMILY: 宋体">数据访问中使用的类和接口：</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-GB">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span lang="EN-US">System.Data</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">——</span><span style="LETTER-SPACING: -1pt"> </span><span style="FONT-FAMILY: 宋体">所有的一般数据访问类</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-GB">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span lang="EN-US">System.Data.Common</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">——</span><span style="LETTER-SPACING: -1pt"> </span><span style="FONT-FAMILY: 宋体">各个数据提供程序共享</span><span lang="EN-US">(</span><span style="FONT-FAMILY: 宋体">或重写</span><span lang="EN-GB">)</span><span style="FONT-FAMILY: 宋体">的类</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-GB">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span lang="EN-US">System.Data.Odbc</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">——</span><span style="LETTER-SPACING: -1pt"> </span><span lang="EN-US">ODBC</span><span style="FONT-FAMILY: 宋体">提供程序的类</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-GB">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span lang="EN-US">System.Data.OleDb</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">——</span><span style="LETTER-SPACING: -1pt"> </span><span lang="EN-US">OLE DB</span><span style="FONT-FAMILY: 宋体">提供程序的类</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-GB">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span lang="EN-US">System.Data.Oracle</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">——</span><span style="LETTER-SPACING: -1pt"> </span><span lang="EN-US">Oracle</span><span style="FONT-FAMILY: 宋体">提供程序的类</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-GB">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span lang="EN-US">System.Data.SqlClient</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">——</span><span style="LETTER-SPACING: -1pt"> </span><span lang="EN-US">Sql Server</span><span style="FONT-FAMILY: 宋体">提供程序的类</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-GB">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span lang="EN-US">System.Data.SqlTypes</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">——</span><span style="LETTER-SPACING: -1pt"> </span><span lang="EN-US">Sql Server</span><span style="FONT-FAMILY: 宋体">数据类型</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">下面两节列出</span><span lang="EN-US">ADO.NET</span><span style="FONT-FAMILY: 宋体">中主要的类。</span></p></div>
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