private void WpfMap_Loaded(object sender, RoutedEventArgs e)
        {
            Map1.MapUnit = GeographyUnit.Meter;
            //Map1.MapUnit = GeographyUnit.DecimalDegree;
            Map1.ZoomLevelSet = new GoogleMapsZoomLevelSet();

            var pointLayer = new InMemoryMarkerOverlay();
            pointLayer.Columns.Add(new FeatureSourceColumn("HOLEID"));
            
            var uri = new Uri(@"D:\Temp\AQUA.png");

            pointLayer.ZoomLevelSet.ZoomLevel01.DefaultPointMarkerStyle.ImageSource = new BitmapImage(uri);
            pointLayer.ZoomLevelSet.ZoomLevel01.DefaultPointMarkerStyle.Width = 20;
            pointLayer.ZoomLevelSet.ZoomLevel01.DefaultPointMarkerStyle.Height = 34;
            pointLayer.ZoomLevelSet.ZoomLevel01.DefaultPointMarkerStyle.YOffset = -17;
            pointLayer.ZoomLevelSet.ZoomLevel01.DefaultPointMarkerStyle.ToolTip = "This is [#HOLEID#].";
            pointLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
            pointLayer.FeatureSource.BeginTransaction();

            var pointShape = new PointShape(60950.578, 10671.408);
            var pointFeature = new Feature(pointShape);
            pointFeature.ColumnValues["HOLEID"] = "1";
            pointLayer.FeatureSource.AddFeature(pointFeature);
            
            pointShape = new PointShape(60950.894, 10675.447);
            pointFeature = new Feature(pointShape);
            pointFeature.ColumnValues["HOLEID"] = "2";
            pointLayer.FeatureSource.AddFeature(pointFeature);
            pointShape = new PointShape(60950.928, 10680.07);
            pointFeature = new Feature(pointShape);
            pointFeature.ColumnValues["HOLEID"] = "3";
            pointLayer.FeatureSource.AddFeature(pointFeature);
            pointLayer.FeatureSource.CommitTransaction();

            var scaleLineAdornmentLayer = new ScaleLineAdornmentLayer();

            Map1.AdornmentOverlay.Layers.Add("ScaleLineAdornmentLayer", scaleLineAdornmentLayer);
            Map1.Overlays.Add(pointLayer);
            Map1.CurrentExtent = pointShape.GetBoundingBox();
            Map1.Refresh();
        }