100165557.htm

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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">BindableAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">在设计期间用于确定支持双向数据绑定的属性</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">BrowsableAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">确定属性是否显示在可视化设计器中</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">CategoryAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">确定在属性窗口中，属性显示在哪个类别中。使用预定义的类别，或创建新的类别。默认值为</span><span lang="ES">Misc</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">DefaultEventAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">指定类的默认事件</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">DefaultPropertyAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">指定类的默认属性</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">DefaultValueAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">指定属性的默认值。一般是初始值</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">DecriptionAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">在选中属性时，这是显示在设计器窗口底部的文本</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="ES">DesignOnlyAttribute</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">把属性标记为只能在设计模式下编辑</span></p>
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<p class="MsoNormal"><span lang="ES">&nbsp;</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">还有其他属性</span><span lang="EN-US">(</span><span style="FONT-FAMILY: 宋体">与在设计期间使用的编辑器相关</span><span lang="ES">)</span><span style="FONT-FAMILY: 宋体">以及一些在设计期间使用的高级功能。此外还应添加</span><span lang="ES">Category</span><span style="FONT-FAMILY: 宋体">和</span><span lang="ES">Decription</span><span style="FONT-FAMILY: 宋体">属性，它们能帮助使用该控件的其他开发人员更好地理解属性的作用。为了添加</span><span lang="ES">Intellisence</span><span style="FONT-FAMILY: 宋体">支持，应给每个属性、方法和事件都添加</span><span lang="ES">XML</span><span style="FONT-FAMILY: 宋体">注释。在使用</span><span lang="ES">/doc</span><span style="FONT-FAMILY: 宋体">选项编译控件时，所生成的注释</span><span lang="ES">XML</span><span style="FONT-FAMILY: 宋体">文件将为控件提供</span><span lang="ES">Intellisence</span><span style="FONT-FAMILY: 宋体">支持。</span></p>
<h4 style="FTEL: 21.45pt"><span lang="EN-US">2. </span><span style="FONT-FAMILY: 黑体">基于</span><span lang="EN-US">TreeView</span><span style="FONT-FAMILY: 黑体">的定制控件</span></h4>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">本节将介绍如何根据</span><span lang="EN-US">TreeView</span><span style="FONT-FAMILY: 宋体">控件</span><span style="FONT-FAMILY: 宋体">开发定制控件。这个控件显示驱动器中的文件结构。我们还将给它添加属性，设置基本文件夹或根文件夹，确定显示哪些文件和文件夹，并使用上一节讨论的各种属性。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">与任何新项目一样，也必须为控件定义需求。下面是必须完成的基本需求列表：</span></p>
<p class="MsoNormal"><span lang="ES">● </span><span style="FONT-FAMILY: 宋体">读取文件夹和文件，并显示给用户</span></p>
<p class="MsoNormal"><span lang="ES">● </span><span style="FONT-FAMILY: 宋体">在树形层次结构视图中显示文件夹结构</span></p>
<p class="MsoNormal"><span lang="ES">● </span><span style="FONT-FAMILY: 宋体">可选地隐藏文件</span></p>
<p class="MsoNormal"><span lang="ES">● </span><span style="FONT-FAMILY: 宋体">定义哪个文件夹是基本文件夹或根文件夹</span></p>