//-------------------------------------------------------------------------
        private void NavigateToFormSimpleSample(object sender, EventArgs e)
        {
            FormSimpleSample ssv = new FormSimpleSample();
            this.NavigationController.PushViewController(ssv, true);

            return;
        }
 //-------------------------------------------------------------------------
 private static void NavigateToFormSimpleSample()
 {
     FormSimpleSample f = new FormSimpleSample();
     f.Show();
 }