Public Function fun_ConnJoin(aConn As ADODB.Connection, Connstr As String, CommandTimeOut As Integer) As String
On Error GoTo Err_Conn
If aConn Is Nothing Then Set aConn = Nothing
Set aConn = New ADODB.Connection
aConn.ConnectionString = Connstr
aConn.CursorLocation = adUseClient
aConn.CommandTimeOut = CommandTimeOut
aConn.Open
fun_ConnJoin = "OK"
Exit Function
Err_Conn:
fun_ConnJoin = Err.Description
'释放连接
Call sub_LogoutConnection(aConn)
End Function