This is almost too basic to ask...

Using the Weak-stock symbol rotation script as an example, one adds paired info (symbol, Value) into a list as follows:

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etc.

1) If one needs to retrieve and/or copy those values later one, how does one do that?
My attempt to retrieve them, and also transfer them to another list, have failed:

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2) Related question: To copy some of the (paired) items from one list to another list, it seems you can't use the Copy method as that apparently transfers from a List to an array (so my readings tell me). So one has to copy the values one holder by one holder, as in the (failed) example above?

In this particular case, you could've used .CopyTo and .AddRange (untested):

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Thanks, Eugene. I will check it out.

Meanwhile, I do want to know how to retrieve individual values (sym and/or value) from a list at some index value[w], say to print out or whatever. Can you help with that?

I suggest checking out the MSDN/dotnetperls/Google et al. first with general C# questions.

I already spent > 1 day doing that. They all give examples of simple, one-item lists which doesn't help in this case. Its only when I was unable to find the answer that I posed the question.
There is no published rotation script that can help out either.

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Hi Eugene,

With your mod, I am getting the following
Runtime error: At least one object must implement IComparable...

Check your syntax carefully.

By the way, code in 1) could be simplified:

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Thanks for the tip.

BTW, I realized the cause of the error was this lower down in the script:
BuyList.Sort();

When I changed it to
BuyList.Sort(this);

the error goes away. Can you enlighten me as to why this is so? (last question)

Never mind, I figured out what 'this' is for.

Thank you very much for all the help!

I guess because your iHolder doesn't implement the IComparable interface. That's why the need to provide a Comparison type.