/* Example of subscribing/unsubscribing to market data from an Add On. The concept can be carried over

to any NinjaScript object you may be working on. */

public class MyAddOnTab : NTTabPage

{

 private Instrument instrument;

 public MyAddOnTab()

 {

         instrument = Instrument.GetInstrument("AAPL");

         if (instrument == null)

                 return;

         // Subscribe to market data. Snapshot data is provided right on subscription

         // Note: "instrument" is a placeholder in this example, you will need to replace

         // with a valid Instrument object through various methods or properties available depending

         // on the NinjaScript type you are working with (e.g., Bars.Instrument or Instrument.GetInstrument()

         if (!instrument.Dispatcher.HasShutdownStarted)

                 instrument.Dispatcher.InvokeAsync(() => instrument.MarketData.Update += OnMarketData);

         // Printing snapshot market data for the last price and time

         NinjaTrader.Code.Output.Process(instrument.MarketData.Last.Price.ToString() + " " + instrument.MarketData.Last.Time.ToString(),

                 PrintTo.OutputTab1);

 }

 // This method is fired on market data events

 private void OnMarketData(object sender, MarketDataEventArgs e)

 {

         // Do something with market data events

 }

 // Called by TabControl when tab is being removed or window is closed

 public override void Cleanup()

 {

         // Make sure to unsubscribe to the market data subscription

         if (instrument != null)

                 instrument.MarketData.Update -= OnMarketData;

 }

 // Other required NTTabPage members left out for demonstration purposes. Be sure to add them in your own code.

}