private double currentZoom = 12.0000;

public Page()

{     InitializeComponent();

viewMap.View = new Microsoft.VirtualEarth.MapControl.MapViewSpecification(

    new Location(40.7025506014784, -73.9726731532458), 12.0000);

viewMap.ViewChangeStart += new EventHandler<MapEventArgs>(viewMap_ViewChangeStart);

viewMap.ViewChangeEnd += new EventHandler<MapEventArgs>(viewMap_ViewChangeEnd);

}

void viewMap_ViewChangeEnd(object sender, MapEventArgs e)

{

    var m = (Map)sender;

    if (currentZoom != m.ZoomLevel)

    {

        if (m.ZoomLevel < 12)

        {

            if (m.ZoomLevel == 11)

            {

                CourseMap4Scale.ScaleX = 1 / 2.0;

                CourseMap4Scale.ScaleY = 1 / 2.0;

                CourseMapScale.ScaleX = CourseMapScale.ScaleY = 1.245 / 2.0;

                CourseScaleTranslate.X = -24;

                CourseScaleTranslate.Y = 415; //X="-48" Y="830"

            }

            else

            {

                CourseMap4Scale.ScaleX = 1 / Math.Pow((12 - m.ZoomLevel), 2);

                CourseMap4Scale.ScaleY = 1 / Math.Pow((12 - m.ZoomLevel), 2);

                CourseMapScale.ScaleX = CourseMapScale.ScaleY = 1.245 / Math.Pow((12 - m.ZoomLevel), 2);

                CourseScaleTranslate.X = -48 / Math.Pow((12 - m.ZoomLevel), 2);

                CourseScaleTranslate.Y = 830 / Math.Pow((12 - m.ZoomLevel), 2); //X="-48" Y="830"

            }

        }

        else if (m.ZoomLevel > 12)

        {

            if (m.ZoomLevel == 13)

            {

                CourseMap4Scale.ScaleX = 2;

                CourseMap4Scale.ScaleY = 2;

                CourseMapScale.ScaleX = CourseMapScale.ScaleY = 1.245 * 2.0;

                CourseScaleTranslate.X = -48 * 2;

                CourseScaleTranslate.Y = 830 * 2; //X="-48" Y="830"

            }

            else

            {   // 14 or higher --. 4

                CourseMap4Scale.ScaleX = Math.Pow((m.ZoomLevel-12), 2);

                CourseMap4Scale.ScaleY = Math.Pow((m.ZoomLevel-12), 2);

                CourseMapScale.ScaleX = CourseMapScale.ScaleY = 1.245 * Math.Pow((m.ZoomLevel - 12), 2);

                CourseScaleTranslate.X = -48.0 * Math.Pow((m.ZoomLevel - 12.0), 2);

                CourseScaleTranslate.Y = 830.0 * Math.Pow((m.ZoomLevel - 12.0), 2); //X="-48" Y="830"

            }

        }

        else

        {

            CourseMap4Scale.ScaleX = 1;

            CourseMap4Scale.ScaleY = 1;

            CourseMapScale.ScaleX = CourseMapScale.ScaleY = 1.245;

            CourseScaleTranslate.X = -48 ;

            CourseScaleTranslate.Y = 830 ;

        }

        currentZoom = m.ZoomLevel;

    }

    NewCourseMap.Visibility = Visibility.Visible;

    CourseMap4.Visibility = Visibility.Visible;

}

void viewMap_ViewChangeStart(object sender, MapEventArgs e)

{

    var m = (Map)sender;

    if (currentZoom != m.ZoomLevel)

    {

        NewCourseMap.Visibility = Visibility.Collapsed;

        CourseMap4.Visibility = Visibility.Collapsed;

    }

}