[RESOLVED] Subclass BindingNavigator - Strange behavior

[stanav]

Hello all,

One of the VBF member was asking how to add a close button on the BindingNavigator control once and reuse it on all other forms, so I try to create a custom bindingnavigator class that inherits the BindingNavigator class.
Below is the inherited class:

Public Class BindingNavigatorEx
    Inherits System.Windows.Forms.BindingNavigator
 
    Public Sub New()
        MyBase.New()
 
        'Add the closeform button
        Dim closeButton As New ToolStripButton("Close", Nothing, New EventHandler(AddressOf CloseForm_OnClick))
        Me.Items.Add(closeButton)
 
        'Add a separator
        Dim separator As New ToolStripSeparator()
        separator.Size = New System.Drawing.Size(6, 25)
        Me.Items.Add(separator)
 
    End Sub
 
    Private Sub CloseForm_OnClick(ByVal sender As Object, ByVal e As System.EventArgs)
        'Find the outer most parent container control and trycast it to a form
        'and call the close method on that form
        Dim parent As Form = Nothing
        Dim child As Control = Me
        Dim ctrl As Control = Me.Parent
        Do Until ctrl Is Nothing
            child = ctrl
            ctrl = ctrl.Parent
        Loop
        parent = TryCast(child, Form)
        If parent IsNot Nothing Then
            parent.Close()
        End If
    End Sub
End Class

The thing that I can't figure out is that it looks OK in design mode, but at run time, the custom binding navigator shows 2 "Close" buttons. Only one of them will close the form when clicked, the other one doesn't function. See the attached image.
Any ideas?