using Close for bars ago.

[bjmoose]

I have this in an indicator


Print (Close.Count);
try {
Print (Close[8]);
}
catch (Exception e) {Print (e.Message);}

It produces the message

2415
Parameter name: indexIndex was out of range. Must be non-negative and less than the size of the collection.

Is this not the proper use of Close?

Thanks.

[NinjaTrader_Ben]

Hello,

Before we get into your code below, are you doing a CurrentBar check?:

http://www.ninjatrader-support2.com/vb/showthread.php?t=3170

You will need to with the "8" index.

[NinjaTrader_Ray]

Its is not correct use since .Count returns the # of elements contained in the series however, OnBarUpdate() is called once per bar starting from left to right on your chart. So, there may be 200 closing prices returned by .Count, the CurrentBar index may only be on bar #1 thus, accessing Close[8] woudl throw an exception since the indicator has not yet seen 8 bars.

Hope that makese sense.