Progress bar cannot be shown while a process is running

[kimiraikkonen]

Hi there,
There is a problem about progress bar; although the
"progressbar1.v isible = True" is present for my invisible
"progressba r1" control to make visible when button1 is clicked, before
execution of my external process, it appears after the external
process finishes processing. And my main and only form (form1) cannot
be interacted while external process is processing. How can i get rid
of it?

Here is the code:

Private Sub Button1_Click_1 (ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click

progressbar1.vi sible = True

Dim psInfo As New System.Diagnost ics.ProcessStar tInfo("c:\blabl a.exe)
psInfo.WindowSt yle = System.Diagnost ics.ProcessWind owStyle.Normal
Dim myProcess As Process = System.Diagnost ics.Process.Sta rt(psInfo)
myProcess.WaitF orExit()
MsgBox(" Completed Successfully", MsgBoxStyle.Inf ormation,
"Completed" )

End Sub
Thanks and regards...

[kimiraikkonen]

Also, note: blabla.exe costs %100 CPU during processing. Could it be
the reason?

Anyway i tried with %40-50 cpu-costing external application with
similar negative result. While external process is running, the main
VB form is corrupted and distorted visually, as appearence and you
cannot click or modify main form during external process runs.

[Cor Ligthert[MVP]]

Armin,

Nice explanation and even without the so by me damned words "message pump".

:-)

Cor

[Armin Zingler]

"Cor Ligthert[MVP]" <no************ @planet.nlschri eb

Armin,

Nice explanation

Thanks :)

and even without the so by me damned words "message
pump".

I'll put it in my synonym list. ;)
Armin

[kimiraikkonen]

On Oct 4, 2:17 pm, "Armin Zingler" <az.nos...@free net.dewrote:

"Cor Ligthert[MVP]" <notmyfirstn... @planet.nlschri eb

Armin,

Nice explanation

Thanks :)

and even without the so by me damned words "message
pump".

I'll put it in my synonym list. ;)

Armin

Mr. Zingler,
Thank you for your detailed answer.

[kimiraikkonen]

Also, if i remove waitforexit(), main form can be interacted while the
external process is running without coding mutlithreading. So is the
unique way to set multi-threading to use waitforexit() effect and main
form interaction at the same same time with external process?

[Armin Zingler]

"kimiraikko nen" <ki************ *@gmail.comschr ieb

Also, if i remove waitforexit(), main form can be interacted while
the external process is running without coding mutlithreading.

Right

So is
the unique way to set multi-threading to use waitforexit() effect
and main form interaction at the same same time with external
process?

Sorry, I don't understand. If you want to wait for exit, you either can
handle the process' Exited event or you can call waitforexit in another
thread. For this purpose I'd prefer handling the Exit event.
Armin

[kimiraikkonen]

On Oct 5, 12:52 pm, "Armin Zingler" <az.nos...@free net.dewrote:

"kimiraikko nen" <kimiraikkone.. [e-mail] ieb

Also, if i remove waitforexit(), main form can be interacted while
the external process is running without coding mutlithreading.

Right

So is
the unique way to set multi-threading to use waitforexit() effect
and main form interaction at the same same time with external
process?

Sorry, I don't understand. If you want to wait for exit, you either can
handle the process' Exited event or you can call waitforexit in another
thread. For this purpose I'd prefer handling the Exit event.

Armin

Thanks Armin, so could you give a simple example about handle exit
event? Sorry for being newbie and glad to receive help from experts.

Thanks.

[Armin Zingler]

"kimiraikko nen" <ki************ *@gmail.comschr ieb

Thanks Armin, so could you give a simple example about handle exit
event? Sorry for being newbie and glad to receive help from experts.

Dim p As Process
'...
'start process
'...
AddHandler p.Exited, AddressOf OnProcessExited

Private Sub OnProcessExited ( _
ByVal sender As Object, ByVal e As System.EventArg s)

MsgBox("exited" )

End Sub
Armin

[kimiraikkonen]

On Oct 5, 11:01 pm, "Armin Zingler" <az.nos...@free net.dewrote:

"kimiraikko nen" <kimiraikkone.. [e-mail] ieb

Thanks Armin, so could you give a simple example about handle exit
event? Sorry for being newbie and glad to receive help from experts.

Dim p As Process
'...
'start process
'...
AddHandler p.Exited, AddressOf OnProcessExited

Private Sub OnProcessExited ( _
ByVal sender As Object, ByVal e As System.EventArg s)

MsgBox("exited" )

End Sub

Armin

Thanks but sorry, "OnProcessExite d" cannot be found via intellisense.
I'm using vb.net 2005 express.