Understanding NinjaTrader.Cbi.Exchange - getting a persistent reference

[liborc]

Hello,

My addon will have a combo box that will allow the user to select an exchange, and after the exchange is selected, a list of pre-saved ticker symbols available on that exchange will be pulled from MySQL and displayed in the addon window. I want to populate this combo box from the NinjaTrader.Cbi.Exchange type. I see 81 fields there, and am trying to figure out which value from the field structure I should be using.

For example, Nyse is:
- field at index [34]
- MetadataToken = 67111518
- Name = "Nyse"


Which one of these should I be saving with my pre-selected tickers? I suppose the Index value may change, the name might change as well, but I am guessing the MetadataToken may correspond to some unique ID of the exchange.

Am I correct?

Thanks,

Libor

[NinjaTrader_ChelseaB]

Hello Libor,

I would recommend using the MasterInstrument.Exchanges value.

http://ninjatrader.com/support/helpGuides/nt8/en-us/exchanges.htm

NinjaTrader.Cbi.Exchange is undocumented, but the Name field is likely all you would to save.

Saving to an Sql database is outside of the realm of NinjaTrader Support. However, this thread will remain open for any community members that would like to assist.

[liborc]

Hello Chelsea,

thank you very much for the quick reply. I do not need assistance with SQL, I just wanted to understand what is the pertinent value to keep in my database.

Regarding the MasterInstrument.Exchanges value - that is what I am using, but the range of values accepted by MasterInstrument.Exchanges is defined in the NinjaTrader.Cbi.Exchange type, and that is what I was trying to understand. From what you are saying it seems as though there is no unique id for the exchanges and I should just use the name. Is that correct? (I was hoping the MetadataToken was it...)

Thank you again,

Libor

[NinjaTrader_ChelseaB]

Libor,

I would only recommend using the name and populating the list by name. No indexes or tokens are guaranteed not to change.