public void CancelOrder(UserTradeOrder aOrder, bool aUseProxy = true) { if (!IsCredentialsSet) { throw new Exception("No Credentials were set"); } if (aOrder == null) { throw new ArgumentNullException(nameof(aOrder), "Invalid argument: " + nameof(aOrder)); } BitfinexClientOptions lBittrexClientOptions = new BitfinexClientOptions() { Proxy = PandoraProxy.GetApiProxy(), ApiCredentials = new ApiCredentials(FUserCredentials.Item1, FUserCredentials.Item2) }; using (BitfinexClient lClient = aUseProxy ? new BitfinexClient(lBittrexClientOptions) : new BitfinexClient()) { var lResponse = lClient.CancelOrderAsync(Convert.ToInt64(aOrder.ID)).Result; if (!lResponse.Success) { throw new Exception("Failed to cancel order in exchange. Message: " + lResponse.Error.Message); } } }