download historical and realtime data with addon

[junkone]

is there a sample for downloading historical and realtime data with a addon?
here is a example where its obviously not working as i am not seeing any data on my output window

#region Using declarations
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.Gui.Tools;
#endregion

//This namespace holds Add ons in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.AddOns
{




/* Example of subscribing/unsubscribing to bars data events from an Add On as well as making bars requests.
The concept can be carried over to any NinjaScript object you may be working on. */
public class AddonAlertsTab : NinjaTrader.NinjaScript.AddOnBase
{
private int daysBack = 5;
private bool barsRequestSubscribed = false;
private BarsRequest barsRequest;

protected override void OnStateChange()
{
try
{
if (State == State.SetDefaults)
{
PrintTo = PrintTo.OutputTab2;
Description = @"Enter the description for your new custom Add on here.";
Name = "AddonAlertsTab";
barsRequest = new BarsRequest(Cbi.Instrument.GetInstrument("EUR/USD"), 8);





}

else if (State == State.Configure)
{
}
else if (State == State.DataLoaded)
{
// Parametrize your request.
barsRequest.BarsPeriod = new BarsPeriod { BarsPeriodType = BarsPeriodType.Minute, Value = 30 };
barsRequest.TradingHours = TradingHours.Get("Default 24 x 7");

// Attach event handler for real-time events if you want to process real-time data
barsRequest.Update += OnBarUpdate;
}
else if (State == State.Terminated)
{
// Unsubscribe to events
try
{
barsRequest.Update -= OnBarUpdate;
barsRequest.Dispose();
barsRequest = null;



}
catch (Exception e)
{
Print(e.StackTrace);

}
}
}

catch (Exception e)
{
Print(e.StackTrace);

}

}


// This method is fired on real-time bar events
private void OnBarUpdate(object sender, BarsUpdateEventArgs e)
{
/* Depending on the BarsPeriod type of your barsRequest you can have situations where more than one bar is
updated by a single tick. Be sure to process the full range of updated bars to ensure you did not miss a bar. */

// Output bar information on each tick
for (int i = e.MinIndex; i <= e.MaxIndex; i++)
{
// Processing every single tick
NinjaTrader.Code.Output.Process(string.Format("Tim e: {0} Open: {1} High: {2} Low: {3} Close: {4}",
e.BarsSeries.GetTime(i),
e.BarsSeries.GetOpen(i),
e.BarsSeries.GetHigh(i),
e.BarsSeries.GetLow(i),
e.BarsSeries.GetClose(i)), PrintTo.OutputTab1);
}
}




}

}

[NinjaTrader_ChelseaB]

Hello junkone,

Below is a link to a working Addon example that uses a BarsRequest.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/add-on-development/97523-receiving-onbarupdate-for-multiple-instruments?p=786208#post786208

[junkone]

how can i detect isFirstTickOftheBar from the Bars object?
how do i know if the bars is realtime bar or historical bar?

protected void BarUpdate(object sender, BarsUpdateEventArgs e)
{
Bars theBars = sender as Bars;
string message = string.Format("{0} | {1}", theBars.GetTime(0), theBars.Instrument.FullName );
NinjaTrader.Code.Output.Process(message, PrintTo.OutputTab1);
}

[efeuvejota01]

I copied the code made from junkone and inserted into a new AddOn.
The code compiles, but i can't find a way to run it from a chart.
how can we link it into something where it runs??
Thank you!!

[junkone]

I copied the code made from junkone and inserted into a new AddOn.
The code compiles, but i can't find a way to run it from a chart.
how can we link it into something where it runs??
Thank you!!

my code is bad code. dont use it. use the example shared earlier at post #2 above.

In addition to Ninjatrader team,
how can i detect isFirstTickOftheBar from the Bars object?
how do i know if the bars is realtime bar or historical bar?

protected void BarUpdate(object sender, BarsUpdateEventArgs e)
{
Bars theBars = sender as Bars;
string message = string.Format("{0} | {1}", theBars.GetTime(0), theBars.Instrument.FullName );
NinjaTrader.Code.Output.Process(message, PrintTo.OutputTab1);
}

[NinjaTrader_ChelseaB]

Hello junkone,

You can save the bar index to a variable and then compare this with e.MaxIndex to see when a new bar is opened.

The AddOn_Framework_NinjaScript_Basic has example code on lines 230, 1504 to 1526.

https://ninjatrader.com/support/helpGuides/nt8/addon_development_overview.htm

If the bar is being looped over from the .Request callback, it is historical data. If the .Update event is running it is real-time data.