public void tradeAsync(OkexCoinType commodity, OkexCoinType currency, OkexStockTradeType tradeType, double price, double amount, HttpAsyncReq.ResponseCallback callback) { string c0 = OkexDefValueConvert.getCoinName(commodity); string c1 = OkexDefValueConvert.getCoinName(currency); string symbol = c0 + "_" + c1; string strType = OkexDefValueConvert.getStockTradeTypeStr(tradeType); postRequest.tradeAsync(symbol, strType, price.ToString(), amount.ToString(), callback); }