Sequence of Treeview Events BeforeExpand, AfterExpand, BeforeCollapse, AfterCollapse, NodeMouseClick called in Windows Forms Application

Check this example.

Dim ExpandOrCollapse As Boolean

Private Sub TreeView1_BeforeExpand(sender As Object, e As TreeViewCancelEventArgs) Handles TreeView1.BeforeExpand
    ExpandOrCollapse = True
    MessageBox.Show("BeforeExpand")
End Sub

Private Sub TreeView1_AfterExpand(sender As Object, e As TreeViewEventArgs) Handles TreeView1.AfterExpand
    ExpandOrCollapse = False
    MessageBox.Show("AfterExpand")
End Sub

Private Sub TreeView1_BeforeCollapse(sender As Object, e As TreeViewCancelEventArgs) Handles TreeView1.BeforeCollapse
    ExpandOrCollapse = True
    MessageBox.Show("BeforeCollapse")
End Sub

Private Sub TreeView1_AfterCollapse(sender As Object, e As TreeViewEventArgs) Handles TreeView1.AfterCollapse
    ExpandOrCollapse = False
    MessageBox.Show("AfterCollapse")
End Sub

Private Sub TreeView1_NodeMouseClick(sender As Object, e As TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
    MessageBox.Show("NodeMouseClick")
    If ExpandOrCollapse Then Return
End Sub

Notsure why it never worked for me. Below fixed my issue.

I removed all the before and after expand/collapse events and placed this inside the nodemouseclick event.

So the code would execute only when the node contents are clicked and not the plus and minus senario.

Dim hit As TreeViewHitTestInfo = TreeView1.HitTest(e.Location)
If hit.Location = TreeViewHitTestLocations.PlusMinus Then Return

so if the user clicks plus o mins the function will not be called.