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
利用ASP输出excel文件一例
asp中使用js的encodeURIComponent
ASP动态网站制作中使用MYSQL的分析
如何编写通用的ASP防SQL注入攻击程序
ASP脚本变量、函数、过程和条件语句
ASP内建对象Application和Session
ASP基础教程:常用的 ASP ActiveX 组件
ASP程序漏洞解析及黑客入侵防范方法
ASP访问带多个参数的存储过程
用ASP和SQL语句动态的创建Access表
ASP初学者学习ASP指令
ASP开发中有用的函数(function)集合(1)
ASP开发中有用的函数(function)集合(2)
ASP开发中有用的函数(function)集合(3)
ASP网站程序自动升级实现的方法
ASP开发中的(VBScript)类基础学习
ASP代码:防止重复多次提交表单的方法
在ASP中使用类,实现模块化
ASP基础教程之学习ASP中子程序的应用
ASP技巧:ASP中三个常用语句的使用技巧

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: 99 ::
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