100165540.htm
来自「C#高级编程(第三版),顶死你们。。 。up」· HTM 代码 · 共 70 行
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19.3.6 HelpProvider组件
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C#高级编程（第3版）【全文连载】
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19.3.6 HelpProvider组件
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2006-10-13 14:41:00
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<div style='float:left;width:49%'>·<a href='100165537.htm'>19.3.3 ComboBox控件与ListBox控件</a></div><div style='float:right;width:49%'>·<a href='100165538.htm'>19.3.4 DateTimePicker控件</a></div><div style='float:left;width:49%'>·<a href='100165539.htm'>19.3.5 ErrorProvider组件</a></div><div style='float:right;width:49%'>·<a href='100165541.htm'>19.3.7 ImageList组件</a></div><div style='float:left;width:49%'>·<a href='100165542.htm'>19.3.8 Label控件</a></div><div style='float:right;width:49%'>·<a href='100165543.htm'>19.3.9 ListView控件</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-LEFT: 0cm; MARGIN-RIGHT: 0cm; FTEL: 8.15pt"><span lang="EN-US">19.3.6 HelpProvider</span><span style="FONT-FAMILY: 黑体">组件</span></h3>
<p class="MsoNormal"><span lang="EN-US">HelpProvider</span><span style="FONT-FAMILY: 宋体">类似于</span><span lang="EN-US">ErrorProvider</span><span style="FONT-FAMILY: 宋体">，也是一个组件，而不是控件。</span><span lang="EN-US">HelpProvider</span><span style="FONT-FAMILY: 宋体">允许挂起控件，显示帮助主题。要把控件与</span><span lang="EN-US">HelpProvider</span><span style="FONT-FAMILY: 宋体">关联起来，应调用</span><span lang="EN-US">SetShowHelp</span><span style="FONT-FAMILY: 宋体">方法，给该方法传送该控件和一个确定是否显示帮助的布尔值。</span><span lang="EN-US">HelpNamespace</span><span style="FONT-FAMILY: 宋体">属性允许设置帮助文件。在设置</span><span lang="EN-US">HelpNamespace</span><span style="FONT-FAMILY: 宋体">属性时，只要按下</span><span lang="EN-US">F1</span><span style="FONT-FAMILY: 宋体">，就会显示帮助文件和用</span><span lang="EN-US">HelpProvider</span><span style="FONT-FAMILY: 宋体">注册的控件。可以用</span><span lang="EN-US">SetHelpKeyword</span><span style="FONT-FAMILY: 宋体">方法为帮助文件设置一个关键字。</span><span lang="EN-US">SetHelpNavigator</span><span style="FONT-FAMILY: 宋体">带一个</span><span lang="EN-US">HelpNavigator</span><span style="FONT-FAMILY: 宋体">枚举值，用于确定显示帮助文件中的哪个元素。可以把它设置为特定的主题、索引、目录表或搜索页面。</span><span lang="EN-US">SetHelpString</span><span style="FONT-FAMILY: 宋体">把与帮助相关的文本字符串值关联到控件上。如果没有设置</span><span lang="EN-US">HelpNamespace</span><span style="FONT-FAMILY: 宋体">属性，按下</span><span lang="EN-US">F1</span><span style="FONT-FAMILY: 宋体">就会在弹出窗口中显示这个文本。下面在上一个示例中添加一个</span><span lang="EN-US">HelpProvider</span><span style="FONT-FAMILY: 宋体">：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">helpProvider1. SetHelpString(txtAge, "Enter an age that is less than 65");</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">helpProvider1. SetHelpString(txtZipCode, "Enter a 5 digit zip code");</span></p></div>
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<h1 id="divCurrentNode2" style="color: #b83507; width: 100%; text-align: left; font-size: 12px; padding-left: 2px">当前章节:<a href='100165540.htm'><font color='red'>19.3.6 HelpProvider组件</font></a></h1>
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<div style='float:left;width:49%'>·<a href='100165537.htm'>19.3.3 ComboBox控件与ListBox控件</a></div><div style='float:right;width:49%'>·<a href='100165538.htm'>19.3.4 DateTimePicker控件</a></div><div style='float:left;width:49%'>·<a href='100165539.htm'>19.3.5 ErrorProvider组件</a></div><div style='float:right;width:49%'>·<a href='100165541.htm'>19.3.7 ImageList组件</a></div><div style='float:left;width:49%'>·<a href='100165542.htm'>19.3.8 Label控件</a></div><div style='float:right;width:49%'>·<a href='100165543.htm'>19.3.9 ListView控件</a></div></div>
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