datagrid分页《非控件版》
2024-07-21 02:19:46
供稿：网友
首先对我之前的发表的那篇补充一下：当你在你的建立的工程中要用到我做的那个用户控件的话：声明 protected datagridpage1 as datagridpage，前是你拖进来的控件名，后是你定义用户控件。然后在你代码中要用你的控件就写上：
datagridpage1.settarget(mydatagrid, new binddatadelegate(addressof binddata))
datagridpage1.setstyle(10, false)
下划线部分是你自己写的一个绑定之类的涵数。sub，function 等。
以下是我不做成控件时的代码：
html：
<%@ page language="vb" autoeventwireup="false" codebehind="fenye.aspx.vb" inherits="datagridtitle.fenye"%>
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<title>fenye</title>
<meta name="generator" content="microsoft visual studio .net 7.1">
<meta name="code_language" content="visual basic .net 7.1">
<meta name="vs_defaultclientscript" content="javascript">
<meta name="vs_targetschema" content="http://schemas.microsoft.com/intellisense/ie5">
</head>
<body ms_positioning="gridlayout">
<form id="form1" method="post" runat="server">
<font face="ms ui gothic">
<asp:datagrid id="mydatagrid" style="z-index: 101; left: 0px; position: absolute; top: 112px"
runat="server" width="744px" height="224px" allowpaging="true">
<pagerstyle visible="false"></pagerstyle>
</asp:datagrid>
<asp:linkbutton id="linkbutton1" style="z-index: 102; left: 8px; position: absolute; top: 96px"
runat="server" width="48px" height="8px">第一頁</asp:linkbutton>
<asp:linkbutton id="linkbutton2" style="z-index: 103; left: 64px; position: absolute; top: 96px"
runat="server" width="56px">前一頁</asp:linkbutton>
<asp:linkbutton id="linkbutton3" style="z-index: 104; left: 120px; position: absolute; top: 96px"
runat="server" width="48px">後一頁</asp:linkbutton>
<asp:linkbutton id="linkbutton4" style="z-index: 105; left: 176px; position: absolute; top: 96px"
runat="server" width="80px">最後一頁</asp:linkbutton>
<asp:label id="label1" style="z-index: 106; left: 552px; position: absolute; top: 80px" runat="server"
width="56px">跳轉到：</asp:label>
<asp:textbox id="txtgopage" style="z-index: 107; left: 624px; position: absolute; top: 80px"
runat="server" width="48px" height="24px"></asp:textbox>
<asp:button id="btngo" style="z-index: 108; left: 680px; position: absolute; top: 80px" runat="server"
height="24px" width="56px" text="button"></asp:button>
<asp:label id="lblcurrentindex" style="z-index: 109; left: 296px; position: absolute; top: 88px"
runat="server" height="24px" width="120px">label</asp:label>
<asp:label id="lblpagecount" style="z-index: 110; left: 424px; position: absolute; top: 88px"
runat="server" width="112px">label</asp:label></font>
</form>
</body>
</html>
web代码：
private sub page_load(byval sender as system.object, byval e as system.eventargs) handles mybase.load
' ページを初期化するユーザー コードをここに挿入します。
if not ispostback then
viewstate("strsort") = "orderid"
mydatagrid.datasource = getdv(viewstate("strsort").tostring())
mydatagrid.databind()
showstatspage()
'call orderbind()
end if
end sub
private function getdv(byval strsort as string) as dataview
dim dv as dataview
dim cn as new sqlconnection
try
cn.connectionstring = "data source=yangchangquan;initial catalog=northwind;persist security info=false;user id=sa;password=pass;"
cn.open()
dim adp as sqldataadapter = new sqldataadapter("select * from orders", cn)
dim ds as new dataset
adp.fill(ds)
dv = ds.tables(0).defaultview
catch ex as exception
#if debug then
session("error") = ex.tostring()
response.redirect("../error.aspx")
#end if
finally
'???接
cn.close()
end try
'排序
dv.sort = strsort
return dv
end function
private sub mydatagrid_sortcommand(byval source as system.object, byval e as system.web.ui.webcontrols.datagridsortcommandeventargs)
mydatagrid.currentpageindex = 0
'得到排序的列
viewstate("strsort") = e.sortexpression.tostring()
mydatagrid.datasource = getdv(viewstate("strsort").tostring())
mydatagrid.databind()
showstatspage()
end sub
private sub btngo_click(byval sender as system.object, byval e as system.eventargs) handles btngo.click
dim pagei as integer
if (txtgopage.text <> "") then
pagei = cint(trim(txtgopage.text)) - 1
if (pagei >= 0 and pagei < (mydatagrid.pagecount)) then
mydatagrid.currentpageindex = pagei
end if
end if
viewstate("strsort") = "orderid"
mydatagrid.datasource = getdv(viewstate("strsort").tostring())
mydatagrid.databind()
showstatspage()
end sub
private sub showstatspage()
lblcurrentindex.text = "[<font color='blue'>當前頁為：" & (mydatagrid.currentpageindex + 1) & "頁</font>]"
lblpagecount.text = "[<font color='blue'>共：" & mydatagrid.pagecount & "頁</font>]"
end sub
private sub linkbutton1_click(byval sender as system.object, byval e as system.eventargs) handles linkbutton1.click
mydatagrid.currentpageindex = 0
viewstate("strsort") = "orderid"
mydatagrid.datasource = getdv(viewstate("strsort").tostring())
mydatagrid.databind()
showstatspage()
end sub
private sub linkbutton4_click(byval sender as system.object, byval e as system.eventargs) handles linkbutton4.click
mydatagrid.currentpageindex = (mydatagrid.pagecount - 1)
viewstate("strsort") = "orderid"
mydatagrid.datasource = getdv(viewstate("strsort").tostring())
mydatagrid.databind()
showstatspage()
end sub
private sub linkbutton2_click(byval sender as system.object, byval e as system.eventargs) handles linkbutton2.click
if (mydatagrid.currentpageindex > 0) then
mydatagrid.currentpageindex = mydatagrid.currentpageindex - 1
viewstate("strsort") = "orderid"
mydatagrid.datasource = getdv(viewstate("strsort").tostring())
mydatagrid.databind()
showstatspage()
end if
end sub
private sub linkbutton3_click(byval sender as system.object, byval e as system.eventargs) handles linkbutton3.click
if (mydatagrid.currentpageindex < (mydatagrid.pagecount - 1)) then
mydatagrid.currentpageindex = mydatagrid.currentpageindex + 1
viewstate("strsort") = "orderid"
mydatagrid.datasource = getdv(viewstate("strsort").tostring())
mydatagrid.databind()
showstatspage()
end if
end sub
完成；
