一个分页的类

作者：整理

<%
‘’-------------------------------------------
‘’ 接口：
‘’ 属性：
‘’ a、tip：项目提示（如，“篇文章”）；
‘’ b、tablewidth：跳转页导航宽度
‘’ 方法：
‘’ a、SetRsObj（）方法：设置ADODB.RECORDSET对象；
‘’ b、ControlPages（）方法：显示跳转页导航（“上一页”、“下一页”……）
‘’ c、SetParams（）方法：设置参数数组
‘’ 范例：
‘’ dim params(1,1)
‘’ params(0,0) = "query" : params(0,1) = request("query")
‘’ params(1,0) = "keyword" : params(1,1) = request("keyword")
‘’ 该数组主要传递查询关键字（如字段关键字、时间等），第一维是参数名称，第二维是参数值：如下http://…….asp?topage=2&query=yes&keyword=a
‘’
‘’ set PageCtrl = new CPageCtrl
‘’ PageCtrl.SetRsObj (RS) ‘’设置ADODB.RECORDSET对象，其中RS是已建立好的ADODB.RECORDSET，即所要控制的记录集
‘’ PageCtrl.tip = "篇文章"
‘’ PageCtrl.tablewidth = "100%"
‘’ PageCtrl.SetParams params

‘’ PageCtrl.DimPage (15) ‘’分页定义，每页15条记录
‘’ PageCtrl.ControlPages() ‘’显示跳转页导航
‘’-------------------------------------------

class CPageCtrl
public tip, tablewidth
private setobjflag, rsobj, pages, record, setparamsflag, current, topage
dim params()
‘’----------------------------------
private sub class_initialize()
tablewidth = "100%"
end sub
‘’---------------------------------
public function SetRsObj(obj)
set rsobj = obj
setobjflage = true
end function
‘’----------------------------------

private function chksetobj()
if setobjflage <> true then response.End()
end function
‘’----------------------------------

public function DimPage(psize) ‘’分页定义
dim topages
topage = request("topage")

if not rsobj.eof then

if not isempty(psize) then
rsobj.pagesize = cint(psize) ‘’定义每页显示数目
else
rsobj.pagesize = rsobj.recordcount
end if

pages = rsobj.pagecount
record = rsobj.recordcount

if topage <> empty then
topages = CInt(topage)

if topage <= 1 then
rsobj.absolutepage = 1
elseif topages >= pages then
rsobj.absolutepage = pages
else
rsobj.absolutepage = topages
end if
end if

current = rsobj.absolutepage
end if

end function
‘’----------------------------------

public function SetParams(arrParams())
params = arrParams
setparamsflag = true
end function

‘’----------------------------------

public function controlpages()
dim url

url = "http://" & request.ServerVariables("HTTP_HOST") & request.ServerVariables("URL")

if setparamsflag = true then
row = ubound(params,1)
col = ubound(params,2)
if col <> 1 then
exit function
end if

for i = 0 to row
if params(i,0) <> empty then
condition = condition & "&" & params(i,0) & "=" & params(i,1)
‘’生成参数
end if
next
end if

response.write "<table width=‘’" & tablewidth & "‘’ border=‘’0‘’ cellspacing=‘’0‘’ cellpadding=‘’0‘’>"
response.write "<form action=‘’" & url & "‘’ method=‘’post‘’>"
response.write "<tr> "
response.write "<td height=‘’20‘’> 目前共有 <font color=‘’red‘’><b>" & record & "</b></font> "& tip & " 当前分页状况 <font color=‘’red‘’><b>" & current & "/" & pages & "</b></font></td>"

if current <> 1 then
response.write "<td width=‘’40‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<a href=‘’" & url & "?topage=1" & condition & "‘’>首页</a>"
response.write "</td>"
response.write "<td width=‘’44‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<a href=‘’" & url & "?topage=" & current-1 & condition & "‘’>上一页</a>"
response.write "</td>"
else
response.write "<td width=‘’40‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<font color=‘’#999999‘’>首页</font>"
response.write "</td>"
response.write "<td width=‘’44‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<font color=‘’#999999‘’>上一页</font>"
response.write "</td>"
end if

if current <> pages then
response.write "<td width=‘’44‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<a href=‘’" & url & "?topage=" & current+1 & condition & "‘’>下一页</a>"
response.write "</td>"
response.write "<td width=‘’40‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<a href=‘’" & url & "?topage=" & pages & condition & "‘’>尾页</a>"
response.write "</td>"
else
response.write "<td width=‘’44‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<font color=‘’#999999‘’>下一页</font>"
response.write "</td>"
response.write "<td width=‘’40‘’ align=‘’center‘’ height=‘’20‘’>"
response.write "<font color=‘’#999999‘’>尾页</font>"
response.write "</td>"
end if

response.write "<td>"
response.write "<input type=‘’text‘’ name=‘’topage‘’ size=‘’4‘’ style=‘’BACKGROUND-COLOR: #ffffff; BORDER-BOTTOM: #a0a0a0 1px solid; BORDER-LEFT: #a0a0a0 1px solid; BORDER-RIGHT: #a0a0a0 1px solid; BORDER-TOP: #a0a0a0 1px solid; FONT-SIZE: 12px‘’>"
response.write "</td>"
response.write "</tr>"
response.write "</form>"
response.write "</table>"

end function
end class
%>

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