ASP.NET 2.0数据处理之高级分页/排序

sub gridview1_databound(byval sender as object, byval e as system.eventargs)
　dim row as gridviewrow
　dim selectedvalue as string = viewstate("selectedvalue")
　if selectedvalue is nothing then
　　return
　end if
　' 检测选择的行是哪个并重新选中它
　for each row in gridview1.rows
　　dim keyvalue as string = gridview1.datakeys(row.rowindex).value
　　if (keyvalue = selectedvalue) then
　　　gridview1.selectedindex = row.rowindex
　　end if
　next
end sub

protected sub gridview1_selectedindexchanged(byval sender as object, byval e as system.eventargs)
　' 保存选中行的索引
　if (not gridview1.selectedindex = -1) then
　　viewstate("selectedvalue") = gridview1.selectedvalue
　end if
end sub

protected sub gridview1_pageindexchanging(byval sender as object, byval e as system.web.ui.webcontrols.gridviewpageeventargs)
　' 重置选中索引
　gridview1.selectedindex = -1
end sub

sub gridview1_sorting(byval sender as object, byval e as system.web.ui.webcontrols.gridviewsorteventargs)
　' 重置选择索引
　gridview1.selectedindex = -1
end sub

＜asp:gridview allowpaging="true" allowsorting="true" autogeneratecolumns="false" datakeynames="au_id" datasourceid="sqldatasource1" enablesortingandpagingcallbacks="true" id="gridview1" runat="server"＞
……
＜/asp:gridview＞

＜pagertemplate＞
＜asp:linkbutton commandname="page" commandargument="first" id="linkbutton1" runat="server" style="color: white"＞<< first＜/asp:linkbutton＞
＜asp:linkbutton commandname="page" commandargument="prev" id="linkbutton2" runat="server" style="color: white"＞< prev＜/asp:linkbutton＞
[records ＜%= gridview1.pageindex * gridview1.pagesize %＞ - ＜%= gridview1.pageindex * gridview1.pagesize + gridview1.pagesize - 1 %＞]
＜asp:linkbutton commandname="page" commandargument="next" id="linkbutton3" runat="server" style="color: white"＞next >＜/asp:linkbutton＞
＜asp:linkbutton commandname="page" commandargument="last" id="linkbutton4" runat="server" style="color: white"＞last >>＜/asp:linkbutton＞
＜/pagertemplate＞