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 createinitialpo p method of pGA and read that tree through initialpopulati on property of pGA. I then try to assign that tree to the treeview already placed on my form named tvwInitialPop.

The me.controls.rem ove(tvwInitialP op) 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.EventArg s) Handles tbrCmdInitAlgo. Click
Try
MsgBox("Asking to create initial population")
pGA.createInitP op(frmBuildConf ig.ndDataRoot)
Application.DoE vents()
Me.Controls.Rem ove(tvwInitialP op)'No msgbox

With pGA.InitialPopu lation
.Name = tvwInitialPop.N ame
.Location = tvwInitialPop.L ocation
.Size = tvwInitialPop.S ize
End With
tvwInitialPop = pGA.InitialPopu lation

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

Catch ex As Exception
MsgBox(ex.ToStr ing)
End Try

End Sub

Private Sub frmExecPAlgo_Co ntrolAdded(ByVa l sender As Object, ByVal e As System.Windows. Forms.ControlEv entArgs) Handles Me.ControlAdded

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

End Sub

Private Sub frmExecPAlgo_Co ntrolRemoved(By Val sender As Object, ByVal e As System.Windows. Forms.ControlEv entArgs) Handles Me.ControlRemov ed

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

End Sub
Can someone help me.

M. Shabbir