*/ --------------------------------------------------------------------------------------
*/ 出自： 建站學  http://www.jzxue.com
*/ 作者： 天涯聽雨    E-mail：qcfy2005@163.com    QQ：809252803
*/ 時間： 2007-10-6  編程論壇首發
*/ 聲明： 尊重作者勞動，轉載請保留本段文字
*/ --------------------------------------------------------------------------------------


<%
'名稱：百萬數據進行分頁
'作者：天涯聽雨 
'時間：2007年10月6日
'平臺：Win2000+IIS5.0+Sql2000
'附言：第一次寫就運用簡單一些，大家不要罵……

'----------------------------------------------------------連接數據庫
Response.Buffer = True
Dim SqlLocalName,SqlUsername,SqlPassword,SqlDatabaseName
Dim ConnStr,Conn

'''''''''''''''''''''''''''''' SQL數據庫 ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
SqlLocalName   ="(local)"       '連接IP  [ 本地用 (local) 外地用IP ]
SqlUsername    ="sa"             '數據庫用戶名 
SqlPassword    ="XXXXXX"         '用戶密碼 
SqlDatabaseName="News2008"       '數據庫名
ConnStr = "Provider=Sqloledb;User ID=" & SqlUsername & "; Password=" & SqlPassword & "; Initial Catalog = " & SqlDatabaseName & "; Data Source=" & SqlLocalName & ";"
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
On Error Resume Next
Set Conn=Server.CreateObject("ADODB.Connection")
Conn.open ConnStr

If Err Then
   err.Clear
   Set Conn = Nothing
   Response.Write "<div style='font-size:14px;color=#ff0000' align='center'>數據庫連接出錯，請檢查數據庫連接字串</div>"
   Response.End
End If
'----------------------------------------------------------連接數據庫完成

'定義變量
'TblName-表名；FldName-排列字段名；FieldName-需讀取的字段名；PageSizeX-分頁大小；PageCountX-總頁數；PageNo-當前頁;OrderType-排序方式；StrWhere-條件語句
'StrSql-總執行語句；FieldCount-總記錄數；StrTmp,StrOrder-臨時變量

Dim TblName,FldName,FieldName,PageSizeX,PageCountX,PageNo,OrderType,StrWhere
Dim StrSql,FieldCount,StrTmp,StrOrder,TopField

'進行賦值
PageNo=trim(Request.Querystring("PageNo"))
if isnumeric(PageNo) or PageNo="" then  '如果沒有Page值，進行初始化值
   PageNo=abs(PageNo)
   if PageNo=0 then PageNo=1
else
   PageNo=1
end if

TblName = "TableNews"
FldName = "ID"    '說明，排序字段值在數據庫不能有重復  :  建議是主鍵
FieldName="ID,Title,AddTime"
PageSizeX=30
OrderType=1 '0-為降序 1-升序
StrWhere=" (Code='0101') and (Hits>100) " '注意: 一個條件就用()雙括號括起來 第一個不用and

TopField=(PageNo-1)*PageSizeX  'TOP多少條

if OrderType=0 then
   StrTmp   = "<(Select min"
   StrOrder = " Order BY ["&FldName&"] desc"
else
    StrTmp   = ">(Select max"
    StrOrder = " Order BY ["&FldName&"] asc"
end if

'定義sql語句
StrSql="Select Top "&Clng(PageSizeX)&" "& FieldName &" From "&TblName&" "

if PageNo=1 then  '如果是第一頁時，執行如下代碼查庫速度快
   if StrWhere<>"" then
      StrSql=StrSql&" Where "&StrWhere & StrOrder&""
   else
      StrSql=StrSql & StrOrder
   end if
else
   if StrWhere<>"" then
      StrSql=StrSql&" Where "& FldName & StrTmp&"("&FldName&") From (Select top "& Clng(TopField)&" "&FldName &" From  "&TblName&" Where "& StrWhere & StrOrder &") as tblTmp) and "& StrWhere & StrOrder&""
   else
      StrSql=StrSql&" Where "& FldName & StrTmp&"("&FldName&") From (Select top "& Clng(TopField)&" "&FldName &" From  "&TblName & StrOrder &") as tblTmp) "&StrOrder&""
   end if 
end if

Set rs=Conn.exeCute(StrSql) '執行查詢

if rs.bof and rs.eof then
   Conn.Close : set Conn=nothing
   response.write "<script LANGUAGE='javascript'>alert('當前沒有找到任何記錄，請返回重新操作！');history.go(-1);</script>"
   response.end
end if

if StrWhere<>"" then '求總記錄數
   FieldCount=Conn.exeCute("Select Count("&FldName&") From "&TblName&" Where "&StrWhere&"")(0)
else
   FieldCount=Conn.exeCute("Select Count("&FldName&") From "&TblName&"")(0)
end if

if (FieldCount mod nPageSize)>0 then '求總頁數 PageCountX
    PageCountX=((FieldCount - (FieldCount mod PageSizeX))/ PageSizeX)+1
else
    PageCountX= (FieldCount / PageSizeX)
end if

'顯示數據 
do while not rs.eof
   response.write""&rs("Title")&"&nbsp;&nbsp;&nbsp;添加時間："&rs("AddTime")&"<br/>"
rs.movenext
loop

'進行關閉和釋放相關資源
rs.Close
Conn.Close : Set Conn=nothing

'顯示分頁
if PageNo<=1 then
   Response.Write "<font color='#FF0000'>[首頁] [上一頁]</font>"
else
   Response.Write"[<a href='?PageNo=1' target='_self' title='首頁'><font color='#FF0000'>首頁</font></a>] "
   Response.Write"[<a href='?PageNo="&(PageNo-1)&"' target='_self' title='上一頁'><font color='#FF0000'>上一頁</font></a>] "
end if

if PageNo>=PageCountX then
    Response.Write "<font color='#FF0000'>[下一頁] [尾頁]</font>"
else
    Response.Write"[<a href='?PageNo="&(PageNo+1)&"'  target='_self' title='下一頁'><font color='#FF0000'>下一頁</font></a>] "
    Response.Write"[<a href='?PageNo="&PageCountX&"' target='_self' title='尾頁'><font color='#FF0000'>尾頁</font></a>]"
end if

Response.Write"[頁次 第<font color=red>"&PageNo&"</font>頁/共<font color=red>" & PageCountX &"</font>頁]"
Response.Write" [共<font color=red>"&FieldCount&"</font>條 <font color=red>"& PageSizeX & "</font>條/頁]"
Response.Write" 轉到：<select name='page' size='1' onchange=""javascript:window.location = '?PageNo='+this.options[this.selectedIndex].value;"">"

for i=1 to PageCountX
    Response.Write"<option value="&i&""
    if PageNo=i then Response.Write" selected"
    Response.Write(">第-"&i&"-頁</option>")
next
Response.Write"</selected>"
%>