Creating an array

[Martin Racette]

Hi,

I new to C#, and I would like to know how I can create an array that I do
not know in advance how many item will be placed there

--
Thank You in Advance
Merci a l'avance

Martin

[Jeroen Mostert]

Re: Creating an array

Martin Racette wrote:

I new to C#, and I would like to know how I can create an array that I
do not know in advance how many item will be placed there
>

Use ArrayList in .NET 1 or List<Tin .NET 2 (or any other more appropriate
collection). You can think of those as "growable arrays".

--
J.

[Rene]

Re: Creating an array

Maybe this will help?

class Program
{
static void Main(string[] args)
{
// Get an array of ints.
int[] i = GetSomeIntArray <int>(123);

// Get an array of objects.
object[] o = GetSomeIntArray <object>(456) ;
}

private static T[] GetSomeIntArray <T>(int size)
{
return new T[size];
}
}


"Martin Racette" <rat7_2001@hotm ail.comwrote in message
news:25873FA1-924C-4E6E-96EF-A63ECE5DD715@mi crosoft.com...

Hi,
>
I new to C#, and I would like to know how I can create an array that I do
not know in advance how many item will be placed there
>
--
Thank You in Advance
Merci a l'avance
>
Martin

[Rudy Velthuis]

Re: Creating an array

Martin Racette wrote:

Hi,
>
I new to C#, and I would like to know how I can create an array that
I do not know in advance how many item will be placed there

Say you have the number of items in numItems, and you want an array of
integers, then you can do:

int[] myArray = new int[numItems];

--
Rudy Velthuis http://rvelthuis.de

"The secret of success is to know something nobody else knows."
-- Aristotle Onassis (1906-1975)

[Martin Racette]

Re: Creating an array

As I was saying I do not know how many items there will be in the array, so
I can not specify the size of it, because the size might be 0 and then again
it might be 1 000 000 000 000 items

So is it possble to create an array without defining its size

"Rudy Velthuis" <newsgroups@rve lthuis.dewrote in message
news:xn0flb0g5c hps0200u@news.m icrosoft.com...

Martin Racette wrote:
>

>Hi,
>>
>I new to C#, and I would like to know how I can create an array that
>I do not know in advance how many item will be placed there

>
Say you have the number of items in numItems, and you want an array of
integers, then you can do:
>
int[] myArray = new int[numItems];
>
--
Rudy Velthuis http://rvelthuis.de
>
"The secret of success is to know something nobody else knows."
-- Aristotle Onassis (1906-1975)

--
Thank You in Advance
Merci a l'avance

Martin

[Rudy Velthuis]

Re: Creating an array

Martin Racette wrote:

As I was saying I do not know how many items there will be in the
array, so I can not specify the size of it, because the size might be
0 and then again it might be 1 000 000 000 000 items

Oh, you want it to be able to grow? Use a List<Tinstead.

FWIW, you will probably have problems with 1 trillion items, no matter
what data type you choose. <g>
--
Rudy Velthuis http://rvelthuis.de

"I think it would be a good idea."
-- Mahatma Gandhi (1869-1948), when asked what he thought of
Western civilization

[Willy Denoyette [MVP]]

Re: Creating an array

"Martin Racette" <rat7_2001@hotm ail.comwrote in message
news:BE2021E7-D051-4809-9FBE-F5394248649E@mi crosoft.com...

As I was saying I do not know how many items there will be in the array,
so I can not specify the size of it, because the size might be 0 and then
again it might be 1 000 000 000 000 items
>
So is it possble to create an array without defining its size

This was answered by others, use an ArrayList or Lis<T>, note that you won't
be able to store an array of 1 000 000 000 000 items ever, but I guess you
know that too.

Willy.

[Martin Racette]

Re: Creating an array

Thanks, that was exactly what I was looking for

And the number was just an example <g>

"Rudy Velthuis" <newsgroups@rve lthuis.dewrote in message
news:xn0flc8u8d osloh009@news.m icrosoft.com...

Martin Racette wrote:
>

>As I was saying I do not know how many items there will be in the
>array, so I can not specify the size of it, because the size might be
>0 and then again it might be 1 000 000 000 000 items

>
Oh, you want it to be able to grow? Use a List<Tinstead.
>
FWIW, you will probably have problems with 1 trillion items, no matter
what data type you choose. <g>
--
Rudy Velthuis http://rvelthuis.de
>
"I think it would be a good idea."
-- Mahatma Gandhi (1869-1948), when asked what he thought of
Western civilization

--
Thank You in Advance
Merci a l'avance

Martin

[Martin Racette]

Re: Creating an array

Thanks, that was exactly what I was looking for

And the number was just an example <g>

"Willy Denoyette [MVP]" <willy.denoyett e@telenet.bewro te in message
news:e6fK9xeWIH A.4880@TK2MSFTN GP03.phx.gbl...

"Martin Racette" <rat7_2001@hotm ail.comwrote in message
news:BE2021E7-D051-4809-9FBE-F5394248649E@mi crosoft.com...

>As I was saying I do not know how many items there will be in the array,
>so I can not specify the size of it, because the size might be 0 and then
>again it might be 1 000 000 000 000 items
>>
>So is it possble to create an array without defining its size

>
This was answered by others, use an ArrayList or Lis<T>, note that you
won't be able to store an array of 1 000 000 000 000 items ever, but I
guess you know that too.
>
Willy.
>

--
Thank You in Advance
Merci a l'avance

Martin

[=?ISO-8859-1?Q?Lasse_V=E5gs=E6ther_Karlsen?=]

Re: Creating an array

Rene wrote:

Maybe this will help?
>
class Program
{
static void Main(string[] args)
{
// Get an array of ints.
int[] i = GetSomeIntArray <int>(123);
>
// Get an array of objects.
object[] o = GetSomeIntArray <object>(456) ;
}
>
private static T[] GetSomeIntArray <T>(int size)
{
return new T[size];
}
}

This must surely be a solution to a different problem than what OP is
asking for?

1. it is named GetSome*Int*Arr ay, whereas it will happily return an
array of any type, since its generic
2. you can easily replace the whole method with a subset of its
contents, ie:

int[] i = new int[123];
object[] o = new object[456];

What in particular was the point of this method?

--
Lasse Vågsæther Karlsen
mailto:lasse@vk arlsen.no

http://presentationmode.blogspot.com/

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