private void DisplayMap_Load(object sender, EventArgs e)
        {
            winformsMap1.MapUnit = GeographyUnit.DecimalDegree;
            winformsMap1.BackgroundOverlay.BackgroundBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);

            Random random = new Random();
            InMemoryFeatureLayer inmLayer = new InMemoryFeatureLayer();
            inmLayer.Open();
            inmLayer.Columns.Add(new FeatureSourceColumn("textContent"));
            inmLayer.ZoomLevelSet.ZoomLevel01.DefaultTextStyle = new TextStyle("textContent", new GeoFont("Arial", 15), new GeoSolidBrush(GeoColor.SimpleColors.Black)) { XOffsetInPixel = 18 };
            inmLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.Capital1;
            inmLayer.ZoomLevelSet.ZoomLevel01.DefaultLineStyle = LineStyles.Canal1;
            inmLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

            ////add waypoints
            Vertex wayPoint1 = new Vertex(random.Next(-180, 180), random.Next(-90, 90));
            Vertex wayPoint2 = new Vertex(random.Next(-180, 180), random.Next(-90, 90));
            Vertex wayPoint3 = new Vertex(random.Next(-180, 180), random.Next(-90, 90));

            ////add lines
            Collection<Vertex> wayPoints = new Collection<Vertex>();
            wayPoints.Add(wayPoint1);
            wayPoints.Add(wayPoint2);

            LineShape line1 = new LineShape(wayPoints);
            
            wayPoints.Clear();
            wayPoints.Add(wayPoint2);
            wayPoints.Add(wayPoint3);
            LineShape line2 = new LineShape(wayPoints);

            wayPoints.Clear();
            wayPoints.Add(wayPoint3);
            wayPoints.Add(wayPoint1);
            LineShape line3 = new LineShape(wayPoints);

            Feature wayPoint1Featrue = new Feature(wayPoint1);
            wayPoint1Featrue.ColumnValues.Add("textContent", "wayPoint1");
            Feature wayPoint2Featrue = new Feature(wayPoint2);
            wayPoint2Featrue.ColumnValues.Add("textContent", "wayPoint2");
            Feature wayPoint3Featrue = new Feature(wayPoint3);
            wayPoint3Featrue.ColumnValues.Add("textContent", "wayPoint3");
            Feature line1Feature = new Feature(line1);
            line1Feature.ColumnValues.Add("textContent", "line1");
            Feature line2Feature = new Feature(line2);
            line2Feature.ColumnValues.Add("textContent", "line2");
            Feature line3Feature = new Feature(line3);
            line3Feature.ColumnValues.Add("textContent", "line3");


            inmLayer.InternalFeatures.Add(wayPoint1Featrue);
            inmLayer.InternalFeatures.Add(wayPoint2Featrue);
            inmLayer.InternalFeatures.Add(wayPoint3Featrue);
            inmLayer.InternalFeatures.Add(line1Feature);
            inmLayer.InternalFeatures.Add(line2Feature);
            inmLayer.InternalFeatures.Add(line3Feature);


            LayerOverlay overlay = new LayerOverlay();
            overlay.Layers.Add(inmLayer);

            winformsMap1.Overlays.Add(overlay);
            winformsMap1.CurrentExtent = inmLayer.GetBoundingBox();
            winformsMap1.Refresh();
        }