Sequence contains no elements

[savekad]

I get a "Sequence contains no elements" for OBU bar 0.
The indicator should access a List<double> of a different indicator.
The list is accessible as other indicators can access its values.

OBU contains only this:

nextBuy = WhereToBuy().BuyPrices.Min();
Print(nextBuy);


Any idea?

[Radical]

That means the list is empty when you're trying to read values from it.

[savekad]

Oh, so a simple if null check will do the trick?

[Radical]

Right, you just need to make sure the list isn't empty.

[savekad]

Can I please get a sample of the null check I should make for a List<double>?

I tried look up the ContainsValue() method but couldn't find its article.

Tried here:

http://www.ninjatrader.com/support/helpGuides/nt7/alphabetical_reference.htm

And here: (link is bad - redirecting to DataSeries Class)

http://www.ninjatrader.com/support/forum/showthread.php?t=33061

[NinjaTrader_Joydeep]

Hello savekad,
What you are trying is more of a C# query and you wont find it in our help guide and beyond what we could support. You can however refer here to this link to know more about it http://www.dotnetperls.com/null-list