Public Class Form1
  Dim oProcess As Process
 
  Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
 
    ' Notepad versteckt starten
    Dim startInfo As New ProcessStartInfo("notepad.exe")
    startInfo.WindowStyle = ProcessWindowStyle.Hidden
    oProcess = Process.Start(startInfo)
  End Sub
 
  Private Sub Button2_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button2.Click
 
    ' Prozess (Notepad) sichtbar machen
    oProcess.StartInfo.WindowStyle = ProcessWindowStyle.Normal
    oProcess.Start()
  End Sub
End Class

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