NotifyIcon & BalloonTip

Question

I am trying to use NotifyIcon to show some information to the user in VB Net.

It is working well, but when the Balloon Tip closes, I set the NotifyIcon visibility to false, the Notify Icon disappears from the tray as I intended, but with it, the notification in the notification panel disappears as well.

How can I get rid of the icon but keep the notification in the notification panel?

Here is some code to reproduce the issue:

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim n As New Notification("I need some cake!", "Hunger", ToolTipIcon.Info, Me.Icon)
    n.ShowBalloon()
End Sub

Class Notification

Private ni As System.Windows.Forms.NotifyIcon

Public Sub New(text As String, title As String, icon As ToolTipIcon, ic As Icon)
    Me.ni = New System.Windows.Forms.NotifyIcon
    ni.Icon = ic
    ni.BalloonTipText = text
    ni.BalloonTipTitle = title
    ni.BalloonTipIcon = icon
    ni.Visible = True


    AddHandler ni.BalloonTipClosed, AddressOf BalloonClosed
End Sub

Public Sub ShowBalloon()
    ni.ShowBalloonTip(20000)

End Sub

Private Sub BalloonClosed(sender As Object, e As System.EventArgs)
    sender.Visible = False
    sender.Dispose()

End Sub

End Class