public void SubscribeToSymbolQuoteFeed(InstrInfo[] instr, DepthOfBkHndlr handler) { Console.WriteLine("Subscribe To Symbol Feed: " + Utilities.InstrToStr(instr)); try { if (instr[0].type == InstrInfo.EType.EQUITY) { eqDobkClient.Subscribe(instr, handler); } else if (instr[0].type == InstrInfo.EType.OPTION) { if (instr.Length > 1) { sprdDobkClient.Subscribe(instr, handler); } else { optDobkClient.Subscribe(instr, handler); } } } catch (Exception ex) { Console.WriteLine("Quote subscription error: " + ex.Message); } }