在数据库没有记录的时候,txtmsg的记录为-1，如何显示正常代码如下

Set objcn = New ADODB.Connection
'建立数据库连接
With objcn
.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=f:\sales.mdb;" & _
"Persist Security Info=False"
.Open
End With
'创建断开连接的客户端记录集
Set objrs = New ADODB.Recordset
With objrs
.CursorLocation = adUseClient '指定使用客户端光标
.LockType = adLockBatchOptimistic '锁类型为开放
.Open "select * from product", objcn
Set .ActiveConnection = Nothing
End With
'关闭数据库连接
objcn.Close '文本框绑定略
txtmsg = "当前记录：" & .AbsolutePosition & "/" & .RecordCount