My.Computer.Network.Ping("www.google.com")
        If My.Computer.Network.Ping("www.google.com") = True Then
            PictureBox1.Visible = True
            PictureBox2.Visible = False
        Else
            PictureBox1.Visible = False
            PictureBox2.Visible = True
        End If
'Je dois faire un Try non ?