100165686.htm
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HTM
723 行
<p class=a6 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
"SELECT * FROM Events", oleDbConnection1);</span></p>
<p class=a6 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
ds.Clear();</span></p>
<p class=a6 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
daEvents.Fill(ds, "Events");</span></p>
<p class=a6 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
eventTable = ds.Tables["Events"];</span></p>
<p class=a6 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
calendar.SelectedDate = </span></p>
<p class=a6 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
getFreeDate(calendar.SelectedDate.AddDays(1));</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><a FTEL="OLE_LINK10"><span
lang=EN-US>
eventDetails1.DataBind();</span></a></p>
<p class=a6 style='margin-top:0cm;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
}</span></p>
<p class=MsoNormal><span style='font-family:宋体'>注意，我们是在</span><span lang=EN-US>DataGrid</span><span
style='font-family:宋体'>上调用</span><span lang=EN-US>DataBind()</span><span
style='font-family:宋体'>，以防止所有的数据绑定控件被刷新，因为不需要刷新。所有的数据绑定控件都支持这个方法，如果调用顶层的</span><span
lang=EN-US>(this) DataBind()</span><span style='font-family:宋体'>方法，窗体就会调用该方法。</span></p>
<p class=MsoNormal><span lang=EN-US>DataGrid</span><span style='font-family:
宋体'>控件包含许多属性，它们可以用于以更友好的方式格式化显示的数据，但这部分内容由您自己学习。</span></p>
<h4 style='FTEL:21.45pt'><span lang=EN-US>1. </span><span
style='font-family:黑体'>使用模板显示数据</span></h4>
<p class=MsoNormal><a FTEL=templates></a><a FTEL=DataList></a><a FTEL=Repeater><span
style='font-family:宋体'>另外两个数据显示控件是</span><span lang=EN-US>Repeater </span></a><span
style='font-family:宋体'>和</span> <span
lang=EN-US>DataList</span><span style='font-family:宋体'>，要求使用模板来格式化要显示的数据。模板在</span><span
lang=EN-US>ASP.NET</span><span style='font-family:宋体'>中是</span><span
lang=EN-US>HTML</span><span style='font-family:宋体'>的参数化部分，用作某些控件的输出元素。它们可以定制如何将数据输出到浏览器上，不需要作太多的工作就可以得到专业级的显示结果。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>有几个模板可用于定制列表的各个方面。对于</span><span
lang=EN-US>Repeater </span><span style='font-family:宋体'>和</span> <span lang=EN-US>DataList</span><span style='font-family:宋体'>来说，一个重要的模板<span
style='letter-spacing:.1pt'>是</span></span><span lang=EN-US style='letter-spacing:
.1pt'><ItemTemplate></span><span style='font-family:宋体;letter-spacing:
.1pt'>，它可以用于显示每个数据项。在控件声明中声明这个模板</span><span lang=EN-US style='letter-spacing:
.1pt'>(</span><span style='font-family:宋体;letter-spacing:.1pt'>和其他模板</span><span
lang=EN-US style='letter-spacing:.1pt'>)</span><span style='font-family:宋体;
letter-spacing:.1pt'>，例如：</span></p>
<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:0cm;
margin-left:21.45pt;FTEL:.0001pt;FTEL:18.45pt'><span
lang=EN-US><asp:DataList Runat="server" ... ></span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
<ItemTemplate></span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
...</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
</ItemTemplate></span></p>
<p class=2 style='margin-top:0cm;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US></asp:DataList></span></p>
<p class=MsoNormal><span style='font-family:宋体'>在模板声明中，一般是输出</span><span
lang=EN-US>HTML</span><span style='font-family:宋体'>的部分内容，参数是绑定到控件的数据。在输出这些参数时，应使用一种特殊的语法：</span></p>
<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US><%# expression
%></span></p>
<p class=MsoNormal><span lang=EN-US>expression </span><span style='font-family:
宋体'>是把参数绑定到页面或控件属性上的一个表达式，但它常常是由一个</span><span lang=EN-US>DataBinder.Eval()</span><span
style='font-family:宋体'>表达式组成。通过指定表中的列，这个函数可以从绑定到控件的表中输出数据，这可以使用下面的语法来实现：</span></p>
<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US><%#
DataBinder.Eval(Container.DataItem, "ColumnName") %></span></p>
<p class=MsoNormal><span style='font-family:宋体'>还有第三个可选参数，可以格式化返回的数据，它的语法与其他地方使用的字符串格式化表达式相同。表</span><span
lang=EN-US>25-6</span><span style='font-family:宋体'>列出了可用的模板以及它们的用法。</span></p>
<p class=a5 style='margin-top:8.15pt'><span style='font-family:黑体'>表</span><span
lang=EN-US> 25-6</span></p>
<div align=center>
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width=583
style='width:437.1pt;margin-left:5.15pt;border-collapse:collapse;border:none'>
<tr>
<td width=233 valign=top style='width:174.85pt;border:solid windowtext 1.0pt;
border-left:none;padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a2><span style='font-family:黑体'>模</span><span lang=EN-US>
</span><span style='font-family:黑体'>板</span></p>
</td>
<td width=350 valign=top style='width:262.25pt;border-top:solid windowtext 1.0pt;
border-left:none;border-bottom:solid windowtext 1.0pt;border-right:none;
padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a2><span style='font-family:黑体'>说</span><span lang=EN-US>
</span><span style='font-family:黑体'>明</span></p>
</td>
</tr>
<tr>
<td width=233 valign=top style='width:174.85pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US><ItemTemplate></span></p>
</td>
<td width=350 valign=top style='width:262.25pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span style='font-family:宋体'>列表项目使用的模板</span></p>
</td>
</tr>
<tr>
<td width=233 valign=top style='width:174.85pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US><HeaderTemplate></span></p>
</td>
<td width=350 valign=top style='width:262.25pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span style='font-family:宋体'>列表前输出内容使用的模板</span></p>
</td>
</tr>
<tr>
<td width=233 valign=top style='width:174.85pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US><FooterTemplate></span></p>
</td>
<td width=350 valign=top style='width:262.25pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span style='font-family:宋体'>列表后输出内容使用的模板</span></p>
</td>
</tr>
<tr>
<td width=233 valign=top style='width:174.85pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US><SeparatorTemplate></span></p>
</td>
<td width=350 valign=top style='width:262.25pt;border:none;border-bottom:
solid windowtext 1.0pt;padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span style='font-family:宋体'>列表中项目之间使用的模板</span></p>
</td>
</tr>
</table>
</div>
<p class=a4 align=right style='margin-left:10.7pt;text-align:right;word-break:
break-all'><span lang=EN-US> (</span><span
style='font-family:宋体'>续表</span><span lang=EN-US>) </span></p>
<div align=center>
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width=583
style='width:437.1pt;margin-left:5.15pt;border-collapse:collapse;border:none'>
<tr>
<td width=233 valign=top style='width:174.85pt;border:solid windowtext 1.0pt;
border-left:none;padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a2><span style='font-family:黑体'>模</span><span lang=EN-US>
</span><span style='font-family:黑体'>板</span></p>
</td>
<td width=350 valign=top style='width:262.25pt;border-top:solid windowtext 1.0pt;
border-left:none;border-bottom:solid windowtext 1.0pt;border-right:none;
padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a2><span style='font-family:黑体'>说</span><span lang=EN-US>
</span><span style='font-family:黑体'>明</span></p>
</td>
</tr>
<tr>
<td width=233 valign=top style='width:174.85pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:1.4pt 9.9pt 1.4pt 9.9pt'>
<p class=a4 style='margin-left:10.7pt'><span lang=EN-US><AlternatingItemTemplate></span></p>
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