Adding tab page to tab control from non UI thread

[Guest]

I've been having a problem on trying add a tab page that are created on non
UI thread to a tab control. I understand that we need to use control.invoke
to invoke the execution on thread that created the control. The code is
working if I simply change a text box text, but not when I adding a tab page.
The exception that I got is "Control.invoke() must be used to interact with
controls created on a separate thread". Here is piece of the code.

Private Delegate Sub AddTabPageDelegate(ByVal tabPage As TabPage)

Private Sub FinishedPopulatingTabPage(ByVal tabPage As
System.Windows.Forms.TabPage) Handles Me.FinishedPopulatingTabPage
If _activeForm.TabControl1.InvokeRequired Then
_activeForm.Invoke(New AddTabPageDelegate(AddressOf AddTabPage),
New Object() {tabPage})
End If
End Sub

Private Sub AddTabPage(ByVal tabPage As TabPage)
_activeForm.TabControl1.TabPages.Add(tabPage)
'_activeForm.Label1.Text = "hello" & tabPage.Text
End Sub

Looks like there is a bug in the tabControl.tabPages.Add(). Any thoughts?

Thanks heaps

 

[Ilya Tumanov [MS]]

You have to create and manipulate all UI objects on UI thread only. That is,
tab page creation should be on UI thread as well.


--
Best regards,

Ilya

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