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HomeDatabaseMysql Tutorial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
  %>

共查到记录,当前为第

If IsEmpty(Session("Moves")) Then
      Session("Moves") =1
End If
%>

记录




  > Type="button" Name="cmdUp" Value="下一条"> Value="末一条">

                                   

查询结果:

                    
                    

(用于逐条显示记录的表格)                    
  
                  
                                    
                  
   value="0">                  
                  
                  
                              
 

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