实验Recordset.Movenext,Recordset.Previous,Recorset...等移动
我在 实验 Recordset.Movenext,Recordset.PRevious,Recorset.......等 移动 记录 的时候遇到了困难. 我用access做后台数据库,通过一个查询条件查询得一个 记录 集,我想用一个表格实现 记录 的逐条浏览(不是一组 记录 分页浏览). 即共查到**条 记录 ,现在是第
我在实验Recordset.Movenext,Recordset.PRevious,Recorset.......等移动记录的时候遇到了困难.我用access做后台数据库,通过一个查询条件查询得一个记录集,我想用一个表格实现记录的逐条浏览(不是一组记录分页浏览). 即"共查到**条记录,现在是第*条",单击"Next"按钮后下一条记录的内容显示在表格中.....
我用如下代码实现(见最后)
发现若将Rst.Open "select * from 某表 where 从某个Form获取的查询条件"
改成 Rst.Open "select * from 某表"(相当于不做查询动作)后, 记录的浏览功能才得以实现.
否则总是出现" EOF或BOF为真 "的错误提示.可我明明可以从"某表"中 "select... where..."到好几个记录的!
总之如何将"记录的逐条浏览"和"select * from 某表 where 从某个Form获取的查询条件" 结合起来?
望予以指点为感!
杨利
2000/4/13
程序代码:
现在您可以编辑以下记录
'创建并打开 Connection 对象。
Set cn=Server.CreateObject("ADODB.Connection")
cn.Open "DSN=数据库名"
'创建并打开 Recordset 对象。
Set Rst = Server.CreateObject("ADODB.Recordset")
Rst.ActiveConnection = cn
Rst.CursorType = adOpenKeyset
Rst.LockType = adLockOptimistic
Rst.Open "select * from 某表 where 性别='"&request.form("t1")&"'"(执行这句大有问题)
Rst.Open "select * from 某表 where 性别='男'"(执行这句有点问题)
Rst.Open "select * from hr_base"(执行这句没有问题)
' 检查 Request.Form 集合以查看所记录的任何移动。
If Not IsEmpty(Request.Form("MoveAmount")) Then
' 跟踪该会话的移动数目和方向。
session("Moves") = Session("Moves") + Request.Form("MoveAmount")
Clicks = Session("Moves")
'移动到上一个已知位置。
Rst.Move CInt(Clicks)
'检查移动为 + 还是 - 并进行错误检查。
If CInt(Request.Form("MoveAmount")) = 1 Then
If Rst.EOF Then
Session("Moves") = Rst.RecordCount
Rst.MoveLast
End If
Rst.MoveNext
End If
If Request.Form("MoveAmount") Rst.MovePrevious
End If
'检查有无单击 First Record 或 Last Record 命令按钮。
If Request.Form("MoveLast") = 3 Then
Rst.MoveLast
Session("Moves") = Rst.RecordCount
End If
If Request.Form("MoveFirst") = 2 Then
Rst.MoveFirst
Session("Moves") = 1
End If
End If
' 对 Move Button 单击组合进行错误检查。
If Rst.EOF Then
Session("Moves") = Rst.RecordCount
Rst.MoveLast
Response.Write "This is the Last Record"
End If
If Rst.BOF Then
Session("Moves") = 1
Rst.MoveFirst
Response.Write "This is the First Record"
End If
%>
共查到条记录,当前为第
If IsEmpty(Session("Moves")) Then
Session("Moves") =1
End If
%>
条记录
> Type="button" Name="cmdUp" Value="下一条"> Value="末一条">
查询结果:

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