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rodchar - 25 Sep 2004 06:53 GMT

Hey all,

I was wondering if you databind to a listbox, can you at the same time have
an extra item in there like say, <new> ?

thanks,
rodchar

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Lucas Tam - 25 Sep 2004 07:52 GMT

> I was wondering if you databind to a listbox, can you at the same time
> have an extra item in there like say, <new> ?

Yes. Just add the item AFTER the databind.

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rodchar - 25 Sep 2004 08:59 GMT

Hey Lucas,

when I add it like this, I get an error message.
lbDescription.DataSource = _dt
lbDescription.DisplayMember = "Description"
lbDescription.ValueMember = "CodesID"
lbDescription.Items.Add("<New>")

I get this error:
An unhandled exception of type 'System.ArgumentException' occurred in
system.windows.forms.dll

Additional information: Cannot modify the Items collection when the
DataSource property is set.

> > I was wondering if you databind to a listbox, can you at the same time
> > have an extra item in there like say, <new> ?
>
> Yes. Just add the item AFTER the databind.

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Lucas Tam - 25 Sep 2004 16:13 GMT

> I get this error:
> An unhandled exception of type 'System.ArgumentException' occurred in
> system.windows.forms.dll
>
> Additional information: Cannot modify the Items collection when the
> DataSource property is set.

Hmm, it works with Webforms, I guess I never tried it with Winforms.

Try adding the item to the dataset ... then binding it. That should work
for sure.

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Lucas Tam (REMOVEnntp@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
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Ken Tucker [MVP] - 25 Sep 2004 09:56 GMT

Hi,

You have to add the item to the datasource.

Ken
-----------------
Hey all,

I was wondering if you databind to a listbox, can you at the same time have
an extra item in there like say, <new> ?

thanks,
rodchar

Reply to this Message

rodchar - 25 Sep 2004 18:43 GMT

10-4.

> Hi,
>
[quoted text clipped - 9 lines]
> thanks,
> rodchar

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VitorJOL - 27 Oct 2004 20:07 GMT

Hello

I have the same problem...but i want to remove a item from listbox but not
remove it from db. the error its the same!!! I can i do this ???

Sorry but i dont understand the other answers to the problem of Rodchar

VitorJOL

> 10-4.
>
[quoted text clipped - 11 lines]
> > thanks,
> > rodchar

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