书签属性是标识当前记录的一种方式，可以用于窗体及记录集，二者可以切换，切换的语句是：

rst.Bookmark = Me.frmyg_child.Form.Bookmark
Me.frmyg_child.Form.Bookmark = rst.Bookmark
下面是上一条、下一条的代码：

Private Sub 上一条_Click()
On Error Resume Next
Dim rst As Object
Set rst = Me.frmyg_child.Form.RecordsetClone
rst.Bookmark = Me.frmyg_child.Form.Bookmark
rst.MovePrevious
Me.frmyg_child.Form.Bookmark = rst.Bookmark
End Sub

Private Sub 下一条_Click()
On Error Resume Next
Dim rst As Object
Set rst = Me.frmyg_child.Form.RecordsetClone
rst.Bookmark = Me.frmyg_child.Form.Bookmark
rst.MoveNext
Me.frmyg_child.Form.Bookmark = rst.Bookmark
End Sub

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