New Post: don't draw route

This is my code.
What i want?
I want draw route between point (routePoint)

exactly i want draw line between 1-2 point, then 2-3 etc

where i make error (mistake)

private void button1_Click_1(object sender, EventArgs e)

    {
        List<PointLatLng> routePoint = new List<PointLatLng>();
        for (int i = 1; i < dostupno.zaTransformacijuImeTacke.Count + 1; i++)
        {
            MapRoute route = GMap.NET.MapProviders.GoogleMapProvider.Instance.GetRoute(
        new PointLatLng(dostupno.Latituda[i], dostupno.Longituda[i]), new PointLatLng(dostupno.Latituda[i], dostupno.Longituda[i])
        , false, false, 15);
            //tackeRute.Add(dostupno.Latituda[i], dostupno.Longituda[i]);
            gMapControl1.Position = new PointLatLng(dostupno.Latituda[i], dostupno.Longituda[i]);
            routePoint.Add(gMapControl1.Position);
            GMapRoute r = new GMapRoute(route.Points, "My route");
            GMapOverlay routesOverlay = new GMapOverlay("My route");
            routesOverlay.Routes.Add(r);
            gMapControl1.Overlays.Add(routesOverlay);
            r.Stroke.Width = 10;
            r.Stroke.Color = Color.SeaGreen;
        }

    }