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Add control to Panel from another thread, not UI thread

Hi misters,

I using BackgroundWorke r control in my Windows Forms. In my form, I have a
SplitterPanel.

In DoWork event , I create controls child, and in ProgressChanged event I
try add controls to SplitterPanel, but the application not responds. I use
InvokeRequired for controls child.

Any suggestions, please ?

Thanks in advance.

Private Sub bgCargaFichero_ DoWork(ByVal sender As System.Object, ByVal e As
System.Componen tModel.DoWorkEv entArgs) Handles bgCargaFichero. DoWork

Try

'SplitContainer 1.Panel1.Suspen dLayout()

'SplitContainer 1.Refresh()

' Procesar fichero

Me.ProcesarFich eroCargadoWork( ) ' IN THIS METHOD I CREATE CONTROLS Type =
ContenedorVisor Base

'SplitContainer 1.Panel1.Resume Layout(False)

If bgCargaFichero. CancellationPen ding = True Then

e.Cancel = True

Else

e.Result = True

End If

End Sub

Private Sub bgCargaFichero_ ProgressChanged (ByVal sender As System.Object,
ByVal e As System.Componen tModel.Progress ChangedEventArg s) Handles
bgCargaFichero. ProgressChanged

Dim contenedorPagin a As
GRUPOBACKUP.Adm inistrador.Util .Cliente.Contro lesWindows.Cont enedorVisorBase =
Nothing

contenedorPagin a = CType(e.UserSta te,
GRUPOBACKUP.Adm inistrador.Util .Cliente.Contro lesWindows.Cont enedorVisorBase )

If contenedorPagin a IsNot Nothing Then

AddMiniaturaToP anel(contenedor Pagina)

End If

=====

Delegate Sub AddMiniaturaToP anelDelegate2(B yVal cCTL As Control)

Private Sub AddMiniaturaToP anel(ByVal cCTL As Control)

If cCTL.InvokeRequ ired Then

Dim d As New AddMiniaturaToP anelDelegate2(A ddressOf AddMiniaturaToP anel)

Me.Invoke(d, New Object() {cCTL})

Else

SplitContainer1 .Panel1.Control s.Add(cCTL) ' Here, the application not
responds !!!!

End If

End Sub


--
http://www.alhambra-eidos.es/web2005/index.html
www.kiquenet.net
http://www.setbb.com/putainformatica...opic.php?p=843
www.trabajobasura.com/solusoft

Aug 8 '08 #1
3 3714
This came up yesterday (I'll look for the post); "no" is the short
answer. Only the UI thread can talk to the UI; and only the UI thread
should be creating controls.

Marc
Aug 8 '08 #2
I'll look for the post

It was, in fact, you. Believe it or not, nothing has changed overnight
- the same answers still apply...

http://groups.google.com/group/micro...fef6fe7e82e09f

Marc
Aug 8 '08 #3

Hi,

First of all this is a C# NG, not VB.NET

and the answer is no, you cannot do it, you have to send the event to
the UI thread using Control.Invoke
Aug 8 '08 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

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