Clear the Runtime-Created Controls from a Panel

How do I clear the a variety of controls I created inside of a Panel?

In side the panel, I load (at runtime) a series of text boxes, lables, radio buttons and checkboxes, when the user clicks on a ListView item.  if the user clicks on a different listview item, I need the contents of the panel cleared out - deleted, so that I can redraw the new controls that pertain to that listview item.

Hope this makes sense!

Thanks for your help!
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Hello !

should be easy :

For each ctl as Controls in panel1.controls

Mike TomlinsonHigh School Computer Science, Computer Applications, and Mathematics TeachersCommented:
Why not just?



Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
slightlyoffAuthor Commented:
Thanks!  That worked perfectly.
Starting with Angular 5

Learn the essential features and functions of the popular JavaScript framework for building mobile, desktop and web applications.

Sorry for not responding earlier, but there's an important fact you should know : The Clear method does not remove control handles from memory, that may lead to memory leaks. That's why I use the Remove method.

Simpler does not always mean better...

Mike TomlinsonHigh School Computer Science, Computer Applications, and Mathematics TeachersCommented:
"The Clear method does not remove control handles from memory"


The controls that are removed will no longer have any references to them (assuming none were explicitly stored somewhere else) and they will AUTOMATICALLY be GARBAGE COLLECTED.

.Net has always done this...where are you getting your information from Syldra?
Is MSDN a good enough source ?

It's been like this since .Net 2.0... you have to call the Dispose method manually.

That's what I understand... I might be wrong.

But as they say, I'd rather be safe than sorry.

Mike TomlinsonHigh School Computer Science, Computer Applications, and Mathematics TeachersCommented:
That's funny how the documentation states that you have to call Dispose() on the controls in the collection but then doesn't do it in the example provided right there on MSDN...  =\

The Remove() method probably doesn't dispose of a control either though...what if you just wanted to remove it but add it back in later?

I just tried both methods and couldn't see any decrease or difference in memory usage, handle count, or gdi object count between the two.

I even tried this:

        While Panel1.Controls.Count > 0
        End While

...and the memory usage dropped slightly but the handle count and gdi object count held steady...but there was also no increase in count for these values when the dynamic controls were created and added to the form.

Thanks for pointing out the documentation but I can't see any difference...
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic.NET

From novice to tech pro — start learning today.