connection 与velation区别relation

connection 与velation区别relation connection Connection: connection connection connection与connections的区别 in connection with 与 in connection to 区别 C#中的Connection.Close()是什么意思?Connection是那个类的属性,属于哪个命名空间?Connection.Close()与ConnectionState.Closed和SqlConnection.Close()的区别? Connection failed . connection是什么意思 connection是什么意思 connection是什么意思? connection timed connection error connection setup Cannot open connection是什么意思 have no connection inbound connection是什么意思