浅谈VS中的DataPager分页
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2024-02-14 17:39:46
微软的datapager分页功能很强大，不要设置数据库存储过程，只要添加个datapager控件，关联下要分页的控件，简单设置就可以有不错的分页效果。当然要有更理想的效果还...
微软的datapager分页功能很强大，不要设置数据库存储过程，只要添加个datapager控件，关联下要分页的控件，简单设置就可以有不错的分页效果。当然要有更理想的效果还是要前台和后台处理下。
winform下的datapager 显示模式:
webform下的样式由templatepagerfield，nextpreviouspagerfield和numericpagerfield控制
通过设置上面几个控件的配合也可以达到winform下的效果，这3个控件中最重要的是templatepagerfield控件。
下面简单看看templatepagerfield控件可以怎么设置：
复制代码 代码如下:
<%@ page language="vb" %>
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en"
"http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<script runat="server">
protected sub templatepagerfield_onpagercommand(byval sender as object, _
byval e as datapagercommandeventargs)
' check which button raised the event
select case e.commandname
case "next"
dim newindex as integer = e.item.pager.startrowindex + e.item.pager.pagesize
if newindex <= e.totalrowcount then
e.newstartrowindex = newindex
e.newmaximumrows = e.item.pager.maximumrows
end if
case "previous"
e.newstartrowindex = e.item.pager.startrowindex - e.item.pager.pagesize
e.newmaximumrows = e.item.pager.maximumrows
case "first"
e.newstartrowindex = 0
e.newmaximumrows = e.item.pager.maximumrows
end select
end sub
</script>
<html xmlns="" >
<head id="head1" runat="server">
<title>templatepagerfield.onpagercommand example</title>
<style type="text/css">
body
{
text-align: center;
font: 12px arial, helvetica, sans-serif;
}
.item
{
border: solid 1px #2f4f4f;
background: #e6e6fa;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<h3>templatepagerfield.onpagercommand example</h3>
<asp:listview id="storeslistview"
datasourceid="storesdatasource"
runat="server">
<layouttemplate>
<table width="350" runat="server" id="tblstore">
<tr runat="server">
<th runat="server">id</th>
<th runat="server">store name</th>
</tr>
<tr id="itemplaceholder" runat="server">
</tr>
</table>
</layouttemplate>
<itemtemplate>
<tr runat="server">
<td class="item">
<asp:label id="idlabel" runat="server" text='<%#eval("customerid") %>' />
</td>
<td align="left" class="item">
<asp:label id="namelabel" runat="server" text='<%#eval("name")%>' />
</td>
</tr>
</itemtemplate>
</asp:listview>
<br />
<asp:datapager runat="server"
id="contactsdatapager"
pagesize="30"
pagedcontrolid="storeslistview">
<fields>
<asp:templatepagerfield onpagercommand="templatepagerfield_onpagercommand">
<pagertemplate>
<asp:linkbutton id="firstbutton" runat="server" commandname="first"
text="<<" enabled='<%# container.startrowindex > 0 %>' />
<asp:linkbutton id="previousbutton" runat="server" commandname="previous"
text='<%# (container.startrowindex - container.pagesize + 1) & " - " & (container.startrowindex) %>'
visible='<%# container.startrowindex > 0 %>' />
<asp:label id="currentpagelabel" runat="server"
text='<%# (container.startrowindex + 1) & "-" & (iif(container.startrowindex + container.pagesize > container.totalrowcount, container.totalrowcount, container.startrowindex + container.pagesize)) %>' />
<asp:linkbutton id="nextbutton" runat="server" commandname="next"
text='<%# (container.startrowindex + container.pagesize + 1) & " - " & (iif(container.startrowindex + container.pagesize*2 > container.totalrowcount, container.totalrowcount, container.startrowindex + container.pagesize*2)) %>'
visible='<%# (container.startrowindex + container.pagesize) < container.totalrowcount %>' />
</pagertemplate>
</asp:templatepagerfield>
</fields>
</asp:datapager>
<asp:sqldatasource id="storesdatasource" runat="server"
connectionstring="<%$ connectionstrings:adventureworks_dataconnectionstring %>"
selectcommand="select [customerid], [name] from sales.store order by [name]">
</asp:sqldatasource>
</form>
</body>
</html>
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