ToArray() ?

[Peter Kirk]

Hi

I call a method which returns an IList containing a list of one type of
object. How do I best convert this IList to an array?

I can see that the ArrayList class has a ToArray() method - but this is not
part of IList.

(I do in fact know that the method I call actually returns an ArrayList as I
have looked in the source code, but technically I really only know it is an
IList).

Thanks,
Peter

[Mattias Sjögren]

I call a method which returns an IList containing a list of one type of
object. How do I best convert this IList to an array?

IList list = ...
Foo[] foos = new Foo[list.Count];
for ( int i = 0; i < foos.Length; i++ )
foos[i] = (Foo)list[i];

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[Peter Kirk]

"Mattias Sjögren" <ma********************@mvps.org> skrev i en meddelelse
news:Oy**************@TK2MSFTNGP10.phx.gbl...

I call a method which returns an IList containing a list of one type of
object. How do I best convert this IList to an array?

IList list = ...
Foo[] foos = new Foo[list.Count];
for ( int i = 0; i < foos.Length; i++ )
foos[i] = (Foo)list[i];

Well, yeah. I just thought there might be an "in bult" method a la
ArrayList's ToArray().

Thanks,
Peter

[Peter Rilling]

How about using ICollection.CopyTo(...). IList implements ICollection.
"Peter Kirk" <[e-mail]> wrote in message
news:ep**************@TK2MSFTNGP14.phx.gbl...

"Mattias Sjögren" <ma********************@mvps.org> skrev i en meddelelse
news:Oy**************@TK2MSFTNGP10.phx.gbl...

I call a method which returns an IList containing a list of one type of
object. How do I best convert this IList to an array?

IList list = ...
Foo[] foos = new Foo[list.Count];
for ( int i = 0; i < foos.Length; i++ )
foos[i] = (Foo)list[i];

Well, yeah. I just thought there might be an "in bult" method a la
ArrayList's ToArray().

Thanks,
Peter

[Daniel O'Connell [C# MVP]]

"Peter Kirk" <[e-mail]> wrote in message
news:u0**************@TK2MSFTNGP09.phx.gbl...

Hi

I call a method which returns an IList containing a list of one type of
object. How do I best convert this IList to an array?

You can load it into an ArrayList and uses ArrayLists.ToArray() if you
aren't worried about performance, otherwise I'd recommend writing a ToArray
implemetnation that takes an IList. Its not terribly hard to do, especially
if you know the type the list is going to be at all times.