主题：统计求助

Dim idx As String = "-1,"
Dim idx_temp As String = ""
Dim pdr As DataRow = Nothing
Dim count As Integer = 0
Dim cs As String = "产品信息"
For Each dr As DataRow In DataTables("成品库存动态表").Select("", cs & " desc ")
   
    Dim flag As Boolean = False
    If pdr IsNot Nothing Then
        If pdr(cs).length >= 8 AndAlso dr(cs).length >= 8 AndAlso pdr(cs).substring(8) <> dr(cs).substring(8) Then
            flag = True
        End If
    End If
    If flag Then
        If count > 1 Then
            idx &= idx_temp
        End If
        count = 1
        idx_temp = ""
    Else
        count += 1
        idx_temp &= dr("_Identify") & ","
    End If
   
    pdr = dr
Next

If count > 1 Then
    idx &= idx_temp
End If
Tables("成品库存动态表").filter = "_Identify not in (" & idx.trim(",") & ")"

 

 请上传具体foxtable实例说明。