Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
        Timer1.Stop()
        TextBox1.Text = TempoTrascorso.Hours.ToString.PadLeft(2, "0"c) & "." & TempoTrascorso.Minutes.ToString.PadLeft(2, "0"c) & "." & TempoTrascorso.Seconds.ToString.PadLeft(2, "0"c)
    End Sub