boundcolumn 最主要的功能是利用linkbutton 或pushbutton 来显示数据源中的一个字段内容，并且可以触发datagrid web 控件的事件。其使用语法如下所示：
<asp:buttoncolumn
buttontype="linkbutton pushbutton"
commandname="命令名称"
datatextfield="datasourcefield"
datatextformatstring="formatstring"
footertext="footertext"
headerimageurl="url"
headertext="headertext"
readonly="true false"
sortfield="datasourcefieldtosortby"
text="buttoncaption"
visible="true false"
/>
<%@import namespace=system.data.ado%>
<%@import namespace=system.data%>
<!--#include file="gettable.inc"-->
<html>
<form runat="server">
<asp:datagrid id="dga" allowpaging="true" pagesize="5"
onpageindexchanged="dga_pagechg" runat="server"
pagerstyle-mode="numericpages" bordercolor="#808080"
headerstyle-font-names="courier new"
headerstyle-backcolor="#d1dceb"
headerstyle-font-bold="true" headerstyle-horizontalalign="center"
autogeneratecolumns="false"
onitemcommand="dga_icmd">
<property name="columns">
<asp: buttoncolumn
headertext="姓名"
datatextfield="username"/>
<asp:boundcolumn
headertext="电话"
datafield="usertel"/>
<asp:boundcolumn
headertext="住址"
datafield="useradd"/>
</property>
</asp:datagrid>
</form>
<asp:label id="label1" runat="server"/>
<script language="vb" runat="server">
sub page_load(sender as object, e as eventargs)
if page.ispostback=false then
dim dtdatatable as datatable=gettable("ch08\myweb.mdb", "members")
dga.datasource=dtdatatable.defaultview
page.databind()
end if
label1.text="您目前没有点选任何记录."
end sub
sub dga_pagechg(sender as object, e as datagridpagechangedeventargs)
dim dtdatatable as datatable=gettable("ch08\myweb.mdb", "members")
dga.datasource=dtdatatable.defaultview
page.databind()
end sub
sub dga_icmd(sender as object, e as datagridcommandeventargs)
dim shtrow as short= e.item.itemindex+1
if shtrow<>0 then
label1.text="您点选了第" & shtrow.tostring() & _
" 个字段的数据, 这<br>笔数据在数据源中是第"
label1.text+=((dga.currentpageindex * dga.pagesize) +
shtrow).tostring & _
"笔记录."
end if
end sub
</script>
</html>
sub dga_icmd(sender as object, e as datagridcommandeventargs)
dim shtrow as short= e.item.itemindex+1
if shtrow<>0 then
label1.text="您点选了第" & shtrow.tostring() & _
" 个字段的数据, 这<br>笔数据在数据源中是第"
label1.text+=((dga.currentpageindex * dga.pagesize) +
shtrow).tostring & _
"笔记录."
end if
end sub
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