protected void PlaySink(System.UInt32 InstanceID, DvAVTransport.Enum_TransportPlaySpeed Speed) { if (ID_Table.ContainsKey(InstanceID) == false) { throw(new UPnPCustomException(802, InstanceID.ToString() + " is not a valid InstanceID")); } else { AVConnection c = (AVConnection)ID_Table[InstanceID]; c.Play(Speed); } }