private void TrackAndEditShapes_Load(object sender, EventArgs e)
        {
            winformsMap1.MapUnit = GeographyUnit.DecimalDegree;
            winformsMap1.CurrentExtent = new RectangleShape(-139.2, 92.4, 120.9, -93.2);
            winformsMap1.Refresh();
        }

        private void button_Click(object sender, EventArgs e)
        {
            Button button = sender as Button;
            if (button != null)
            {
                switch (button.Name)
                {
                    case "btnTrackNormal":
                        winformsMap1.TrackOverlay.TrackMode = TrackMode.None;
                        break;
                    case "btnTrackLine":
                        winformsMap1.TrackOverlay.TrackMode = TrackMode.Line;
                        break;
                    case "btnTrackEdit":
                        winformsMap1.TrackOverlay.TrackMode = TrackMode.None;
                        MultilineShape multiLines = new MultilineShape();

                        foreach (Feature feature in winformsMap1.TrackOverlay.TrackShapeLayer.InternalFeatures)
                        { multiLines.Lines.Add(feature.GetShape() as LineShape); }

                        winformsMap1.EditOverlay.EditShapesLayer.InternalFeatures.Add(new Feature(multiLines));
                        winformsMap1.EditOverlay.CalculateAllControlPoints();
                        winformsMap1.TrackOverlay.TrackShapeLayer.InternalFeatures.Clear();
                        winformsMap1.Refresh(new Overlay[] { winformsMap1.EditOverlay, winformsMap1.TrackOverlay });
                        break;
                    default:
                        winformsMap1.TrackOverlay.TrackMode = TrackMode.None;
                        break;
                }
            }
        }