I changed my code to replace an arraylist with a collection derived from
collectionbase to get type-safe calls. Now though, I cannot seem to add a
null value to the collection, where I could previously with an arraylist. Am
I doing something wrong? Is there a way around it?

Thx

"John B" <(E-Mail Removed)> wrote in
news:fuWdnVQvRPc9bIzfRVn-(E-Mail Removed):
> I changed my code to replace an arraylist with a collection derived from
> collectionbase to get type-safe calls. Now though, I cannot seem to add
> a null value to the collection, where I could previously with an
> arraylist. Am I doing something wrong? Is there a way around it?

Stating actual errors I've found is quite useful when requesting help.


--
Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
"Programming is an art form that fights back"

Get your ASP.NET in gear with IntraWeb!
http://www.atozed.com/IntraWeb/

Here is the class:

public class ControlCollection : CollectionBase
{
public void Add(Control control)
{
base.List.Add(control);
...
}

....
}

and here is the error when control is null:

ArguementNullException was unhandled
Value can not be null.
Parameter name: value

Thanks
---

"Chad Z. Hower aka Kudzu" <(E-Mail Removed)> wrote in message
news:Xns95FE5E021C4F6cpub@127.0.0.1...
> "John B" <(E-Mail Removed)> wrote in
> news:fuWdnVQvRPc9bIzfRVn-(E-Mail Removed):
> > I changed my code to replace an arraylist with a collection derived from
> > collectionbase to get type-safe calls. Now though, I cannot seem to add
> > a null value to the collection, where I could previously with an
> > arraylist. Am I doing something wrong? Is there a way around it?
>
> Stating actual errors I've found is quite useful when requesting help.
>
>
> --
> Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
> "Programming is an art form that fights back"
>
> Get your ASP.NET in gear with IntraWeb!
> http://www.atozed.com/IntraWeb/



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"John B" <(E-Mail Removed)> wrote in news:42121925$1_2@127.0.0.1:
> ArguementNullException was unhandled
> Value can not be null.
> Parameter name: value

This is coming from CollectionBase - it probably does not allow nulls as part
of its functionality, which would make sense for a collection.


--
Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
"Programming is an art form that fights back"

Get your ASP.NET in gear with IntraWeb!
http://www.atozed.com/IntraWeb/

you can't add a null to strongly typed collection, it is only going to
accept objects of the type required, a null value does not have a typed
defined.

HTH

Ollie Riches


"John B" <(E-Mail Removed)> wrote in message
news:42121925$1_2@127.0.0.1...
> Here is the class:
>
> public class ControlCollection : CollectionBase
> {
> public void Add(Control control)
> {
> base.List.Add(control);
> ...
> }
>
> ...
> }
>
> and here is the error when control is null:
>
> ArguementNullException was unhandled
> Value can not be null.
> Parameter name: value
>
> Thanks
> ---
>
> "Chad Z. Hower aka Kudzu" <(E-Mail Removed)> wrote in message
> news:Xns95FE5E021C4F6cpub@127.0.0.1...
> > "John B" <(E-Mail Removed)> wrote in
> > news:fuWdnVQvRPc9bIzfRVn-(E-Mail Removed):
> > > I changed my code to replace an arraylist with a collection derived
from
> > > collectionbase to get type-safe calls. Now though, I cannot seem to
add
> > > a null value to the collection, where I could previously with an
> > > arraylist. Am I doing something wrong? Is there a way around it?
> >
> > Stating actual errors I've found is quite useful when requesting help.
> >
> >
> > --
> > Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
> > "Programming is an art form that fights back"
> >
> > Get your ASP.NET in gear with IntraWeb!
> > http://www.atozed.com/IntraWeb/
>
>
>
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News==----
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Newsgroups
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