Skiping adding same indicators to Chart from two Strategies running in the same Chart

[massiel]

How I can detect that the same indicators has been added to the Chart from two identical strategies running on the same chart?

I've notice that ChartPanel.ChartObjects contains the strategies created in the Chart, and I can explore ChartIndicators container to check if the same Indicator has been declared before skippng AddChartIndicator(myindicator) call but sometimes I got System.InvalidCastException: 'Unable to cast object of type 'NinjaTrader.NinjaScript.Strategies.MyPackage.MySt rategy' to type 'NinjaTrader.NinjaScript.Strategies.Strategy

I can not figure out when this excecptions happens as sometimes works fine.

1. How I can "force" casting to NinjaTrader.NinjaScript.Strategies.Strategy ?
2. Is there another simpler way to detect if the same indicators from another strategies has been added already?

Thanks in advance.

[NinjaTrader_Kate]

Hello massiel,

Thank you for your post.

You can check to see if ChartControl is not null, and if it's not, you can check ChartControl.Indicators collection to see if an indicator is added. If you know the names of the public properties you can see if it is identical to the one you want to add. I'm attaching a very simple example that demonstrates this - if it's added to a chart without an existing SMA(14) indicator applied, it will add it to the chart. If it is added to a chart with an SMA(14) on it already, it will not add the indicator and will instead print a message to the bottom left corner of the chart stating it was not added.

Please let us know if we may be of further assistance to you.

[massiel]

Thanks for the fast and precise answer!