问:ado对象连接中的资源释放
Private Sub Form_Load()
Dim con As ADODB.Connection
Dim rs As ADODB.Recordset
Set con = New ADODB.Connection
con.ConnectionString = "Provider=sqloledb;" & _
"Data Source=ddl;Initial Catalog=pubs;User Id=sa;Password=1111"
con.CursorLocation = adUseClient
con.Open
Set rs = New ADODB.Recordset
rs.Open "titles", con
Set DataGrid1.DataSource = rs
End Sub
该如何释放con和rs,还是系统自己会管理