IsFirstBarOfSession problems on TickReplay charts

[Ricam]

In OnBarUpdate, IsFirstBarOfSession is not supposed to require a null reference check.

BUT, when this method is used in an indicator on a TickReplay chart, even if there IS a null reference check, there will be null reference exceptions as the chart loads.

The error occurs when the ChartBars.ToIndex exceeds the CurrentBar. Checking to make sure that is not the case seems to eliminate the error.

Sample code attached. Run on a tick replay chart and see what happens if you disable the filter for that condition. This indicator is intended to be placed in a folder called Bands.

[NinjaTrader_PatrickH]

Hello Ricam,

Thank you for reporting this item.

We will test this further on our end.

[Ricam]

Wondering if maybe OnBarUpdate is being called during State.Terminated. I haven't checked, but I do know that OnRender can be called, which will be problematic.

[NinjaTrader_PatrickH]

Ricam,

I am able to reproduce the IsFirstTickOfBar item, but can you provide an example of testing OnRender and OnBarUpdate for State.Terminated?

[Ricam]

I think you could test for that by putting a conditional print statement inside the OnBarUpdate and OnRender methods

if(State == State,Terminated) Print something.

The important thing is that you were able to reproduce the error.. excellent. Thanks.

[NinjaTrader_PatrickH]

Ricam,

I thought you might have a specific use case. I have not seen either called during the terminated state.