I am trying to convert an object of a class which is derived from
collectionbase class.It's not working:
while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
{
al.Add(line);


}
string[] exc_string = (string[])al.ToArray(typeof(string));

somebody know why?
Thank you!

Without a repro case and information about what it is that goes wrong
exactly it is hard to tell.

/Joakim

juli wrote:
> I am trying to convert an object of a class which is derived from
> collectionbase class.It's not working:
> while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
> {
> al.Add(line);
>
>
> }
> string[] exc_string = (string[])al.ToArray(typeof(string));
>
> somebody know why?
> Thank you!

ArrayList al = new ArrayList();
while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
{
al.Add(line);


}
string[] exc_string = (string[])al.ToArray(typeof(string));

That's my program.Could u tell me why convertion faild?
Thanks!



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ArrayList al = new ArrayList();
while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
{
al.Add(line);


}
string[] exc_string = (string[])al.ToArray(typeof(string));

That's my program.Could u tell me why convertion faild?
Thanks!



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"It's not working" is not a sufficient statement of the problem. What is
the exact error you're getting?

--Bob

"juli" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>I am trying to convert an object of a class which is derived from
> collectionbase class.It's not working:
> while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
> {
> al.Add(line);
>
>
> }
> string[] exc_string = (string[])al.ToArray(typeof(string));
>
> somebody know why?
> Thank you!

Not without some more information I'm afraid. Could you

1. Describe what kind of failure you see. Do you get an exception? Get
corrupted data?

2. Could you post a short but complete program (as Jon likes to put it).

/Joakim

juli jul wrote:
> ArrayList al = new ArrayList();
> while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
> {
> al.Add(line);
>
>
> }
> string[] exc_string = (string[])al.ToArray(typeof(string));
>
> That's my program.Could u tell me why convertion faild?
> Thanks!
>
>
>
> *** Sent via Developersdex http://www.developersdex.com ***
> Don't just participate in USENET...get rewarded for it!

juli jul <(E-Mail Removed)> wrote:
>
> ArrayList al = new ArrayList();
> while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
> {
> al.Add(line);
>
>
> }
> string[] exc_string = (string[])al.ToArray(typeof(string));
>
> That's my program.Could u tell me why convertion faild?

No, that's not your program. It's a small part of your program.Further,
as Joakim said, you haven't provided any sample data.

Please read http://www.pobox.com/~skeet/csharp/complete.html

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

There isnt anything wrong with the code, Break on the line at the end of the
code snippet and check the contents of the ArrayList.

Ciaran

"juli jul" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
>
> ArrayList al = new ArrayList();
> while ((line = file.ReadLine()) != null && line.IndexOf(" ")!=-1)
> {
> al.Add(line);
>
>
> }
> string[] exc_string = (string[])al.ToArray(typeof(string));
>
> That's my program.Could u tell me why convertion faild?
> Thanks!
>
>
>
> *** Sent via Developersdex http://www.developersdex.com ***
> Don't just participate in USENET...get rewarded for it!

Thank you all,but I found my problem.


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