public string PlaceOrder(string order_currency, float units, int price, BithumbOrderType type)
        {
            string url = "https://api.bithumb.com/trade/place";

            return(CallAPI_Private_WithParam(url, new NameValueCollection {
                { "order_currency", order_currency }, { "payment_currency", "KRW" }, { "units", units.ToString() }, { "price", price.ToString() }, { "type", type.ToString() }
            }));
        }
        public string CancelOrder(string order_id, BithumbOrderType type, string currency)
        {
            string url = "https://api.bithumb.com/trade/cancel";

            return(CallAPI_Private_WithParam(url, new NameValueCollection {
                { "order_id", order_id }, { "type", type.ToString() }, { "currency", currency }
            }));
        }
        public string GetOrders(string order_id, BithumbOrderType type, int count, DateTime after, string currency)
        {
            string url = "https://api.bithumb.com/info/orders";

            return(CallAPI_Private_WithParam(url, new NameValueCollection {
                { "order_id", order_id }, { "type", type.ToString() }, { "after", new DateTimeOffset(after).ToUnixTimeSeconds().ToString() }, { "currency", currency }
            }));
        }