当前位置: 首页 > 图文教程 > 网络编程 > ASP > dreamweaverMX通用分页代码研究

ASP
ASP正则表达式技巧
ASP Access实现网站计数器(访问量)
ASP新闻分页,将一篇过长的文章分页,生成静态页面
一些关于asp 购物车的想法
一个sql查询器,自动画表格填字段
ASP实现文件直接下载的代码
把网页中的(电话,qq等数字)生成图片的ASP程序
asp长文章用分页符来分页显示
Asp函数介紹(37个常用函数)
ASP中的面向对象类
分页实现方法的性能比较
asp ajax跨域提交数据
asp修改文件和文件夹的名字的代码
ASP 多关键词查询实例代码
asp被杀毒软件误删的解决方法
asp 多关键词搜索的简单实现方法
asp 根据IP地址自动判断转向分站的代码
asp dictionary对象的用法
ASP 千万级数据分页的存储过程
ASP隐藏真实文件的下载功能实现代码

ASP 中的 dreamweaverMX通用分页代码研究


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-11-03   浏览: 227 ::
收藏到网摘: n/a

  dreamweaverMX已经正式发布了,Deamweaver4 + Deamweaver ULTRADEV 4 的组合使他成为当然的制做网页的首选工具,(好象做广告:) )
好了,进入正题,
我在以前做网页的分页时候都是用自己写的服务端脚本(我从不用ADO的分页),用了MX后发现在这里面用分页太方便了,不过代码也有点太长了,大家看下面的代码就可以知道。用过之后我发现里面recordset 的cursortype设为0分页竟然可以正常工作!这令我吃惊不少,分析了代码之后才发现MX 是用了一种挺笨的方法实现的,效率很低,所以大家还是用1吧:)
分析如下:


<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<!--#include file="Connections/ncarcnn.asp" -->
<%
Dim Recordset1
Dim Recordset1_numRows

Set Recordset1 = Server.CreateObject("ADODB.Recordset")
Recordset1.ActiveConnection = MM_ncarcnn_STRING
Recordset1.Source = "SELECT * FROM dbo.ncarinfo"

Recordset1.CursorType = 0
'这里用0也可以正常运行,但是经过分析代码可以看出,用0的效率很低,建议用1


Recordset1.CursorLocation = 2
Recordset1.LockType = 1
Recordset1.Open()

Recordset1_numRows = 0
%>


<%
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'以下为分页代码
Dim Repeat1__numRows
Dim Repeat1__index

Repeat1__numRows = 10
Repeat1__index = 0
Recordset1_numRows = Recordset1_numRows + Repeat1__numRows
%>
<%
'  *** Recordset状态, 定义状态变量

Dim Recordset1_total
Dim Recordset1_first
Dim Recordset1_last

' set the record count
Recordset1_total = Recordset1.RecordCount

' set the number of rows displayed on this page
If (Recordset1_numRows < 0) Then
  Recordset1_numRows = Recordset1_total
Elseif (Recordset1_numRows = 0) Then
  Recordset1_numRows = 1
End If

' set the first and last displayed record
Recordset1_first = 1
Recordset1_last  = Recordset1_first + Recordset1_numRows - 1

' if we have the correct record count, check the other stats 处理正确的rs
If (Recordset1_total <> -1) Then
  If (Recordset1_first > Recordset1_total) Then
    Recordset1_first = Recordset1_total
  End If
  If (Recordset1_last > Recordset1_total) Then
    Recordset1_last = Recordset1_total
  End If
  If (Recordset1_numRows > Recordset1_total) Then
    Recordset1_numRows = Recordset1_total
  End If
End If
%>
<%
' *** Recordset Stats: if we don't know the record count, manually count them处理错误的RS

If (Recordset1_total = -1) Then

  ' count the total records by iterating through the recordset
  Recordset1_total=0
  While (Not Recordset1.EOF)
    Recordset1_total = Recordset1_total + 1
    Recordset1.MoveNext
  Wend

  ' reset the cursor to the beginning
  If (Recordset1.CursorType > 0) Then
    Recordset1.MoveFirst
  Else
    Recordset1.Requery
  End If

  ' set the number of rows displayed on this page
  If (Recordset1_numRows < 0 Or Recordset1_numRows > Recordset1_total) Then
    Recordset1_numRows = Recordset1_total
  End If

  ' set the first and last displayed record
  Recordset1_first = 1
  Recordset1_last = Recordset1_first + Recordset1_numRows - 1
  
  If (Recordset1_first > Recordset1_total) Then
    Recordset1_first = Recordset1_total
  End If
  If (Recordset1_last > Recordset1_total) Then
    Recordset1_last = Recordset1_total
  End If

End If
%>
<%
Dim MM_paramName
%>
<%
' *** Move To Record and Go To Record: d