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28.1.4 方法绑定
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28.1.4 方法绑定
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2006-10-13 14:41:00
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<div style='float:left;width:49%'>·<a href='100165711.htm'>28.1.1 元数据</a></div><div style='float:right;width:49%'>·<a href='100165712.htm'>28.1.2 释放内存</a></div><div style='float:left;width:49%'>·<a href='100165713.htm'>28.1.3 接口</a></div><div style='float:right;width:49%'>·<a href='100165715.htm'>28.1.5 数据类型</a></div><div style='float:left;width:49%'>·<a href='100165716.htm'>28.1.6 注册</a></div><div style='float:right;width:49%'>·<a href='100165717.htm'>28.1.7 线程</a></div></div>
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<div id="text"> <link href="css.css" rel="stylesheet" type="text/css" /><h3 style='margin-top:8.15pt;margin-right:0cm;FTEL:8.15pt;margin-left:
0cm'><span lang=EN-US>28.1.4 </span><span style='font-family:黑体'>方法绑定</span></h3>
<p class=MsoNormal><span style='font-family:宋体'>客户程序映射方法的方式是用早期绑定和后期绑定来定义的。后期绑定表示要调用的方法是在运行期间确定的。</span><span
lang=EN-US>.NET</span><span style='font-family:宋体'>使用</span><span lang=EN-US>System.Reflection</span><span
style='font-family:宋体'>命名空间来实现后期绑定的</span><span lang=EN-US>(</span><span
style='font-family:宋体'>参阅第</span><span lang=EN-US>10</span><span
style='font-family:宋体'>章</span><span lang=EN-US>)</span><span style='font-family:
宋体'>。</span></p>
<p class=MsoNormal><span lang=EN-US>COM</span><span style='font-family:宋体'>使用上面讨论的</span><span
lang=EN-US>IDispatch</span><span style='font-family:宋体'>接口进行后期绑定。后期绑定可以使用分派接口和双重接口来实现。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>在</span><span lang=EN-US>COM</span><span
style='font-family:宋体'>中，早期绑定有两个不同的选项。早期绑定的一种方式也称为虚拟表绑定，它直接使用虚拟表，可以通过定制接口和双重接口来实现。早期绑定的第二种方式也称为</span><span
lang=EN-US>ID</span><span style='font-family:宋体'>绑定。其中分派</span><span
lang=EN-US>ID</span><span style='font-family:宋体'>存储在客户程序代码中，在运行期间只需要调用一次</span><span
lang=EN-US>Invoke()</span><span style='font-family:宋体'>。方法</span><span
lang=EN-US>GetISdOfNames()</span><span style='font-family:宋体'>在设计期间调用程序。对于这种客户，记住不必改变分派</span><span
lang=EN-US>ID</span><span style='font-family:宋体'>是非常重要的。</span></p>
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<div style='float:left;width:49%'>·<a href='100165711.htm'>28.1.1 元数据</a></div><div style='float:right;width:49%'>·<a href='100165712.htm'>28.1.2 释放内存</a></div><div style='float:left;width:49%'>·<a href='100165713.htm'>28.1.3 接口</a></div><div style='float:right;width:49%'>·<a href='100165715.htm'>28.1.5 数据类型</a></div><div style='float:left;width:49%'>·<a href='100165716.htm'>28.1.6 注册</a></div><div style='float:right;width:49%'>·<a href='100165717.htm'>28.1.7 线程</a></div></div>
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