Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles MyBase.Load
        If Me.StartFrom = IO.DriveType.Network Then
            MsgBox("Start vom Netzlaufwerk nicht erlaubt. Anwendung wird" & _
              "beendet.")
            Me.Close()
        End If
    End Sub
 
    Public ReadOnly Property StartFrom() As IO.DriveType
        Get
            Return New IO.DriveInfo(Application.StartupPath).DriveType
        End Get
    End Property