ADO循环该怎么改

  这个该怎么添加ADO 让它循环，谢谢啦

Private Sub cmdadd_Click()
Dim Rs As ADODB.Recordset
Dim curdb As Database
Dim 入库窗体6 As Recordset
Dim deviceCnt As Long
Dim num As Integer
Set 入库窗体6 = curdb.OpenRecordset("select * from tblfb where 产品编号='" & Me!入库窗体6.Form!产品编号.Value & "'")
Set Rs = New ADODB.Recordset
num = Rs(0)
Set curdb = CurrentDb
'Rs.Open "入库窗体6", CurrentProject.Connection, adOpenKeyset, adLockOptimistic
If Not 入库窗体6.EOF Then
deviceCnt = 入库窗体6.Fields("库存数量")
deviceCnt = deviceCnt
curdb.Execute "update tblfb set 库存数量=" & 入库窗体6.Fields("库存数量").Value + CLng(Me!入库窗体6.Form!入库数量.Value) & " where 产品编号='" & Me!入库窗体6.Form!产品编号.Value & "'"
deviceCnt = 入库窗体6.Fields("总合计")
deviceCnt = deviceCnt
curdb.Execute "update tblfb set 总合计=" & 入库窗体6.Fields("总合计").Value + CLng(Me!入库窗体6.Form!合计.Value) & " where 产品编号='" & 产品编号.Value & "'"
Else
With 入库窗体6
.AddNew
.Fields("类别") = 类别.Value
.Fields("产品编号") = 产品编号.Value
.Fields("产品名称") = 产品名称.Value
.Fields("库存数量") = CLng(Me!入库窗体6.Form!入库数量.Value)
.Fields("库存单位") = 库存单位.Value
.Fields("备注") = 备注.Value
.Fields("总合计") = CLng(Me!入库窗体6.Form!合计.Value)
End With
'DoCmd.SetWarnings False
'DoCmd.RunSQL "delete tblrk.入库数量 from tblfb where (((tblrk.入库数量) Is Null))"
'DoCmd.SetWarnings True
End If