arraylist - how do I retrieve a single element?

[Peter Webb]

This is driving me crazy.

I have defined an arraylist as follows:

public ArrayList drawnballs;

This is instantiated through

drawnballs = new ArrayList();

I add balls to this just fine with:

drawnballs.Add(myball);

I can access every element (every ball) through a foreach statement, that
works great.

What I can't do is get just the first ball (or any individual ball).

anotherball = drawnballs[0] doesn't work. There is no method like
anotherball = drawnballs.Item[1]; which is what I would expect. I can't get
the drawnballs.getarray method to work.

Please, please, how do I reference a single ball in drawnballs (ie in an
arraylist)?

[Jon Skeet [C# MVP]]

On Nov 5, 11:54 am, "Peter Webb"
<[e-mail]:

This is driving me crazy.

<snip>

What I can't do is get just the first ball (or any individual ball).

anotherball = drawnballs[0] doesn't work.

It does, but being a weakly typed ArrayList you need to cast it:

anotherball = (MyBall) drawnballs[0];

Are you still using C# 1? If you're using C# 2 (and .NET 2.0) then
you'd be better off using List<T>.

Jon

[Peter Webb]

Exactly what I needed to know. The web pages you provided were great; I
browsed some of the other pages and picked up on a lot of other stuff that
helps explains what going on.

Its a long learning curve from 6502 assembler to C#, and I have enjoyed
almost every minute of it so far.

Thanks for your help, and good luck with your book (if you decide to
publish).

[Jon Skeet [C# MVP]]

Peter Webb <we********@DIESPAMDIEoptusnet.com.auwrote:

Exactly what I needed to know. The web pages you provided were great; I
browsed some of the other pages and picked up on a lot of other stuff that
helps explains what going on.

Excellent. Do ask again if any of it becomes difficult again. I've
found that I sometimes think I understand something, and then when I
try to use it something else goes wrong!

Its a long learning curve from 6502 assembler to C#, and I have enjoyed
almost every minute of it so far.

It's certainly a lot more productive than assembler :)

Thanks for your help, and good luck with your book (if you decide to
publish).

Oh yes, it's due out in March.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too