listbox frenzy

[Guest]

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

 

[Lucas Tam]

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.

 

[Guest]

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.

 

[Ken Tucker [MVP]]

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

 

[Lucas Tam]

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.

 

[Guest]

10-4.

 

[Guest]

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