Can I select a listbox item in my program if the listbox is not visible

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I have a listbox on my form and I add entries to it throughout the program. Normally the listbox Visible property is set to FALSE. When it is FALSE the SELECTITEDITEM only returns the first entry. When I change it to TRUE I am able in my program to select the last entry that was added. The VISABLE status seems to be the only difference.

Within my program can I select an item, even if the listbox is set to NOT Visable?

What I have tried:

Within References or Control documentation I have not been able to find any qualifications on a VISABLE function on a LISTBOX.

Posted 20-Nov-23 8:34am

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Ralf Meier 20-Nov-23 15:21pm

what is thge sense of using an unvisible Listbox ?
and ... do you allways want to get the last Item of the Entries inside yor Listbox ?
In fact you could get any Item of your Listbox at any time - independant of the Listbox.Visible-State

Andre Oosthuizen 20-Nov-23 15:22pm

Soooo, what code do you use to select items in your listbpx when it is NOT visible, this will help a lot to figure out what you are trying to do...

Dave Kreskowiak 20-Nov-23 20:34pm

It sounds like your "data model" is not a model at all and you're using UI controls to store data. That's a really bad idea.

There is no point at all, even for "debugging purposes" to use hidden UI controls to store and "select data".

Richard MacCutchan 21-Nov-23 6:14am

My previous comment has been removed. However, I ran a quick test, and the ListBox behaves exactly the same whether it is visible or not. And in previous applications that I have created I know that a Windows control's general behaviour is unaffected bu iys visibilitty. That is, of course apart from the fact that you may not be able to see it.

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Graeme_Grant · Answer 1 · 2023-11-20T22:56:00

If you use data binding with the ListBox to a List, you don't need to access the ListBox to access the collection. The ListBox becomes a 'view' to the data. This means that you can access the collection of data directly.

You can read more on how to do this here:
* Bind ComboBox or ListBox Control to Data - Windows Forms .NET Framework | Microsoft Learn[^]
* Best Practice for Binding WinForms List Controls - Code Project[^]

Ralf Meier · Answer 2 · 2023-11-20T22:48:00

you haven't answered my question - but independant here is an answer for you :

VB

Dim l As Integer = ListBox1.Items.Count
Dim myEntry as string = ListBox1.Items(l-1)

this gives you the last Entry from your Listbox.
to get any else you should realize that the Entry-List is Zero-based - that means that the first entry stays a Index=0 and so on ...

Can I select a listbox item in my program if the listbox is not visible

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