The form is not Removing the tree view Control

[Muhammad Shabbir]

I faced problem similar to that of Loren Baker.

I am developing a course timetable using Genetic Algorithm approach. I have cretaed a class named primitiveGA and instantiated an object of that class as pGA. I pass data as treenode to createinitialpop method of pGA and read that tree through initialpopulation property of pGA. I then try to assign that tree to the treeview already placed on my form named tvwInitialPop.

The me.controls.remove(tvwInitialPop) fails to trigger as i check that event of form by placing a msgbox in it.

However, the me.controls.add(tvwInitialPop) executes and msgbox pops up.
But the contents of tree view are not updated and it remains blank. The code used is below:

Private Sub tbrCmdInitAlgo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tbrCmdInitAlgo.Click
Try
MsgBox("Asking to create initial population")
pGA.createInitPop(frmBuildConfig.ndDataRoot)
Application.DoEvents()
Me.Controls.Remove(tvwInitialPop)'No msgbox

With pGA.InitialPopulation
.Name = tvwInitialPop.Name
.Location = tvwInitialPop.Location
.Size = tvwInitialPop.Size
End With
tvwInitialPop = pGA.InitialPopulation

Me.Controls.Add(tvwInitialPop)'msgbox displayed but no nodes shown in tvwInitialPop

Catch ex As Exception
MsgBox(ex.ToString)
End Try

End Sub

Private Sub frmExecPAlgo_ControlAdded(ByVal sender As Object, ByVal e As System.Windows.Forms.ControlEventArgs) Handles Me.ControlAdded

MsgBox("Added" & e.Control.Name)

End Sub

Private Sub frmExecPAlgo_ControlRemoved(ByVal sender As Object, ByVal e As System.Windows.Forms.ControlEventArgs) Handles Me.ControlRemoved

MsgBox("Removed" & e.Control.Name)

End Sub
Can someone help me.

M. Shabbir