MarketData

// 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.
}