OnMarketData Error out-of-range

[Itachi]

I have the following code:

if ((marketDataUpdate.MarketDataType == MarketData Type.Last) && (marketDataUpdate.Price >= marketDat aUpdate.Ask))
{
if (askVols.Count == 50)
{
askVols.RemoveAt(0);
}
askVols.Add(marketDataUpdate.Volum e);
askAvg = GetAvgVolume(askVols);
}

Calculate is set to : Calculate.OnEachTick;

Error : Error on calling 'OnMarketData' method on bar 5571: You are accessing an index with a value that is invalid since it is out-of-range

[NinjaTrader_ChrisL]

Hi Itachi, thanks for posting.

Please use Visual Studio debugging to find the specific line that is throwing the exception:

https://ninjatrader.com/support/helpGuides/nt8/?visual_studio_debugging.htm

Another good way to debug is to use Print() methods throughout the program to see the data coming from the indicator e.g.

Print((askVols.Count);
Print("Removing At 0");
askVols.RemoveAt(0);
Print("Adding");
askVols.Add(marketDataUpdate.Volume);

Kind regards,
-ChrisL