Image visible during background process

[Diego F.]

Hello. I have a process that can take a long time and I'm trying to put an
animated gif while the user is waiting.

I added a panel with a picturebox with the image inside. The panel is not
visible when the application starts, but before the process, I make it
visible.

The problem is that while the long process is running, the image doesn't
appear. The panel is empty.

How can I ensure that the animated gif is shown?

--

Regards,

Diego F.

[rowe_newsgroups]

On Apr 10, 7:15 am, "Diego F." <diego_f...@msn .comwrote:

Hello. I have a process that can take a long time and I'm trying to put an
animated gif while the user is waiting.

I added a panel with a picturebox with the image inside. The panel is not
visible when the application starts, but before the process, I make it
visible.

The problem is that while the long process is running, the image doesn't
appear. The panel is empty.

How can I ensure that the animated gif is shown?

--

Regards,

Diego F.

Are you running the "long process" on the main UI thread or on a
seperate thread?

Thanks,

Seth Rowe

[Diego F.]

"rowe_newsgroup s" <ro********@yah oo.comwrote in message
news:11******** **************@ e65g2000hsc.goo glegroups.com.. .

On Apr 10, 7:15 am, "Diego F." <diego_f...@msn .comwrote:

>Hello. I have a process that can take a long time and I'm trying to put
an
animated gif while the user is waiting.

I added a panel with a picturebox with the image inside. The panel is not
visible when the application starts, but before the process, I make it
visible.

The problem is that while the long process is running, the image doesn't
appear. The panel is empty.

How can I ensure that the animated gif is shown?

--

Regards,

Diego F.

Are you running the "long process" on the main UI thread or on a
seperate thread?

Thanks,

Seth Rowe

Actually I'm running that process in the main thread. I can run it in a
separate thread with the Backgroundworke r, but then I need to stop the
execution until it's finished. How can I do that?

--

Regards,

Diego F.

[Diego F.]

I found that code:

Private _dataLock As New ManualResetEven t(False)
Me.BackgroundWo rker1.RunWorker Async()
_dataLock.WaitO ne()

and in the DoWork method...
_dataLock.Set()

The problem is that the application stops completely and the gif animation
is not shown, so I'm in the same point again.

--

Regards,

Diego F.


"Diego F." <di********@msn .comwrote in message
news:uD******** ******@TK2MSFTN GP04.phx.gbl...

>
Actually I'm running that process in the main thread. I can run it in a
separate thread with the Backgroundworke r, but then I need to stop the
execution until it's finished. How can I do that?

--

Regards,

Diego F.

[rowe_newsgroups]

On Apr 10, 10:12 am, "Diego F." <diego_f...@msn .comwrote:

"rowe_newsgroup s" <rowe_em...@yah oo.comwrote in message

news:11******** **************@ e65g2000hsc.goo glegroups.com.. .

On Apr 10, 7:15 am, "Diego F." <diego_f...@msn .comwrote:

Hello. I have a process that can take a long time and I'm trying to put
an
animated gif while the user is waiting.

I added a panel with a picturebox with the image inside. The panel is not
visible when the application starts, but before the process, I make it
visible.

The problem is that while the long process is running, the image doesn't
appear. The panel is empty.

How can I ensure that the animated gif is shown?

--

Regards,

Diego F.

Are you running the "long process" on the main UI thread or on a
seperate thread?

Thanks,

Seth Rowe

Actually I'm running that process in the main thread. I can run it in a
separate thread with the Backgroundworke r, but then I need to stop the
execution until it's finished. How can I do that?

--

Regards,

Diego F.

I wouldn't use the BackGroundWorke r, but thats just me. I would create
a class that wraps the method and contains a "WorkFinish ed" event that
fires when the task is done. Then you just have to instantiate the
class, subscribe to it's WorkFinished event, and call it's Begin()
method - the class will take care of spawning the new thread and will
notify you when it's done.

Something like this:

' Typed in message

Public Class MyThreadWrapper

public sub new()

end sub

public sub Begin()
Dim t as new thread(addresso f DoTheWork)
' Set any necessary properties for the thread
t.Start()
end sub

private sub DoTheWork()
' Do the long process
RaiseEvent(Work Finished(me, EventArgs.Empty ))
end sub

public event WorkFinished as EventHandler

End Class

Thanks,

Seth Rowe