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给上次的datagrid分页增加些功能!
<%@ import namespace="system.data" %>
<html>
<script language="c#" runat="server">
icollection createdatasource() {
datatable dt = new datatable();
datarow dr;
dt.columns.add(new datacolumn("integervalue", typeof(int32)));
dt.columns.add(new datacolumn("stringvalue", typeof(string)));
dt.columns.add(new datacolumn("datetimevalue", typeof(string)));
dt.columns.add(new datacolumn("boolvalue", typeof(bool)));
for (int i = 0; i < 200; i++) {
dr = dt.newrow();
dr[0] = i;
dr[1] = "item " + int32.tostring(i);
dr[2] = datetime.now.toshortdatestring();
dr[3] = (i % 2 != 0) ? true : false;
dt.rows.add(dr);
}
dataview dv = new dataview(dt);
return dv;
}
void page_load(object sender, eventargs e) {
if (chk1.checked) {
mydatagrid.pagerstyle.visible=true;
}
else {
mydatagrid.pagerstyle.visible=false;
}
bindgrid();
}
void pagerbuttonclick(object sender, eventargs e) {
//used by external paging ui
string arg = ((linkbutton)sender).commandargument;
switch(arg)
{
case ("next"):
if (mydatagrid.currentpageindex < (mydatagrid.pagecount - 1))
mydatagrid.currentpageindex ++;
break;
case ("prev"):
if (mydatagrid.currentpageindex > 0)
mydatagrid.currentpageindex --;
break;
case ("last"):
mydatagrid.currentpageindex = (mydatagrid.pagecount - 1);
break;
default:
//page number
mydatagrid.currentpageindex = arg.toint32();
break;
}
bindgrid();
}
void mydatagrid_page(object sender, datagridpagechangedeventargs e) {
//used by built-in pager. currentpageindex already set
bindgrid();
}
void bindgrid() {
mydatagrid.datasource = createdatasource();
mydatagrid.databind();
showstats();
}
void showstats() {
lblcurrentindex.text = "currentpageindex is " + mydatagrid.currentpageindex;
lblpagecount.text = "pagecount is " + mydatagrid.pagecount;
}
</script>
<body>
<h3><font face="verdana">providing alternate paging ui</font></h3>
<form runat=server>
<asp:datagrid id="mydatagrid" runat="server"
allowpaging="true"
pagesize="10"
pagerstyle-mode="numericpages"
pagerstyle-horizontalalign="right"
onpageindexchanged="mydatagrid_page"
bordercolor="black"
borderwidth="1"
gridlines="both"
cellpadding="3"
cellspacing="0"
font-name="verdana"
font-size="8pt"
headerstyle-backcolor="#aaaadd"
alternatingitemstyle-backcolor="#eeeeee"
/>
<p>
<asp:linkbutton id="btnprev" runat="server"
text="previous page"
commandargument="prev"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<asp:linkbutton id="btnnext" runat="server"
text="next page"
commandargument="next"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<asp:linkbutton id="btnpage8" runat="server"
text="go to page 8"
commandargument="7"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<asp:linkbutton id="btnfirst" runat="server"
text="go to the first page"
commandargument="0"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<asp:linkbutton id="btnlast" runat="server"
text="go to the last page"
commandargument="last"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<p>
<asp:checkbox id="chk1" runat="server"
text="show built-in pager"
font-name="verdana"
font-size="8pt"
autopostback="true"
/>
<p>
<table bgcolor="#eeeeee" cellpadding="6"><tr><td nowrap><font face="verdana" size="-2">
<asp:label id="lblcurrentindex" runat="server" /><br>
<asp:label id="lblpagecount" runat="server" /><br>
</font></td></tr></table>
</form>
</body>
</html>
作者:jspfuns()
