Update control on one form from another

[Jack]

In vb.net how can I update a control on one (open) form from another form or
module.

I have a form that calls a sub on a module and want to have the code in the
module add an item to a list box on the form.

Thanks,

Jack

[Kerry Moorman]

Jack,

One way is to pass the sub a reference to the listbox.

Pass the listbox reference as an argument to the sub. The sub can then add
an item to the listbox referenced in its argument list.

Kerry Moorman
"Jack" wrote:

In vb.net how can I update a control on one (open) form from another form or
module.

I have a form that calls a sub on a module and want to have the code in the
module add an item to a list box on the form.

Thanks,

Jack

[Jeffrey Tan[MSFT]]

Hi Jack,

Kerry has provided you a valid solution. Another way is modifying the
modifier of ListBox reference from "private" to "public", then with the
Form reference, you may manipulate the ListBox easily like this:
form1.listBox1.Items.Add(...)

Note: the default modifier of all windows forms controls are "private". You
may also expose the ListBox reference with a Public property which wraps
the private ListBox reference.

If you have a lot of out-of-form code that need to manipulate the ListBox,
you'd better expose the ListBox reference publicly with either options I
provided above.

Hope this helps.

Best regards,
Jeffrey Tan
Microsoft Online Community Support
==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscripti...ult.aspx#notif
ications.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscripti...t/default.aspx.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.