Posted: Nov 15, 2016 @ 09:19 AM             Msg. 1 of 4

Is the any option to set own identifier for placing orders?

Posted: Nov 15, 2016 @ 03:10 PM             Msg. 2 of 4

Can you advise what you mean? Do you mean be able to send a comment?
According to https://gainfutures.com/api/html/9900566b-260a-4247-8326-9698b013e7b8.htm

static void oecapi_OnPriceTick(OEC.API.Contract contract, OEC.API.Price price)
{
if (Math.Abs(price.LastPrice - price.BidPrice) < contract.TickSize)
PlaceOrder(contract, OEC.Data.OrderSide.Buy, price.BidPrice, "By Bid");
else if (Math.Abs(price.LastPrice - price.AskPrice) < contract.TickSize)
PlaceOrder(contract, OEC.Data.OrderSide.Sell, price.AskPrice, "By Ask");
}

private static void PlaceOrder(OEC.API.Contract contract, OEC.Data.OrderSide orderSide, double limitPrice, string comments)
{
if (oecapi.Orders.Count == 0 || oecapi.Orders.Last.IsFinalState)
{
OEC.API.NewOrderDraft orderDraft = oecapi.CreateDraft();
orderDraft.Account = oecapi.Accounts.First;
orderDraft.Contract = contract;
orderDraft.Side = orderSide;
orderDraft.Type = OEC.Data.OrderType.Limit;
orderDraft.Price = limitPrice;
orderDraft.Quantity = 1;
orderDraft.End = DateTime.UtcNow.AddMinutes(1);
orderDraft.Comments = comments;
OEC.API.OrderParts invalidOrderParts = orderDraft.GetInvalidParts();
if (invalidOrderParts != OEC.API.OrderParts.None)
{
Console.WriteLine("ERROR. Order {0} {1} {2} @ {3} Limit is invalid: {4}", orderSide, orderDraft.Quantity, contract.Symbol, contract.PriceToString(limitPrice), invalidOrderParts);
}
else
{
OEC.API.Order order = oecapi.SendOrder(orderDraft);
Console.WriteLine("Order {0} was sent", order);
}
}
}

Comments topic:
https://gainfutures.com/api/html/P_OEC_API_OrderDraft_Comments.htm

Posted: Nov 15, 2016 @ 04:46 PM             Msg. 3 of 4

Do you have some numeric fields for ID?

Order.ID set by internal OEC logic. We need to pass unique user id to each order. That should be stored on server side and ability to get it while restart the trading app.

Posted: Nov 15, 2016 @ 05:03 PM             Msg. 4 of 4

Some third parties have used comments field for such purpose.