I think the best way is "create and add controls on main thread". And here
what we do in multi-threading.
Delegate Sub AddControlDelegate(methodParameters)
Sub AddControl(methodParameters)
If Me.InvokeRequired Then
Me.Invoke(New AddControlDelegate(AddressOf AddControl),
methodParameters)
Else
' Create New Control, use methodParameters
' Add control in container
End If
End Sub
And instead of using following code,
If Me.InvokeRequired Then
' It's on a different thread, so use Invoke.
Me.Invoke(Me.Controls.Add(Ctrl1)) <----------------- not sure what to
here
Else
Me.Ribbon1.Controls.Add(Ctrl1)
End If
Just execute the AddControl() method with parameters
Regards,
Arsalan Tamiz
On Fri, Apr 17, 2009 at 5:28 PM, Barkingmadscot <[email protected]> wrote:
>
> I am try to add controls to my program , which i have no problem
> doing. The problem is i want to improve the speed/preformance of my
> App, i have delcare and get a number of thread to complete work. one
> of which is to add x number of controls to the form.
>
>
> this is the sub called by the thread
>
> Private Sub mythreadmethod1()
>
> CentralSQL.SQLString = "Exec spTC_ResourceGroups '" &
> strProjNo & "'"
>
> Dim xPos As Integer = 1
> For Each Group As String In CentralSQL.Read(1, SQLConn)
> If Group = "" Then Group = "UnAssigned"
>
> Ctrl1 = New CustomControl
> Ctrl1.Header.Text = Group
>
> If xPos > 1 Then
> Ctrl1.Location = New Point((Ctrl1.Width * (xPos - 1))
> + 3, 1) '# position next ctrl to the perviously control
> Else
> Ctrl1.Location = New Point(1, 1)
> End If
>
> If Me.InvokeRequired Then
> ' It's on a different thread, so use Invoke.
> Me.Invoke(Me.Controls.Add(Ctrl1)) <-----------------
> not sure what to here
> Else
> Me.Ribbon1.Controls.Add(Ctrl1)
> End If
> xPos += 1
> Next
>
> End Sub
>
