private void RenderMap()
{
winformsMap1.MapUnit = GeographyUnit.DecimalDegree;
winformsMap1.BackgroundOverlay.BackgroundBrush = new GeoSolidBrush(GeoColor.FromHtml("#e6e5d1"));
winformsMap1.CurrentExtent = new RectangleShape(-96.905564, 32.926216, -96.651506, 32.744942);
WorldStreetsAndImageryOverlay worldStreetsAndImageryOverlay = new WorldStreetsAndImageryOverlay();
winformsMap1.Overlays.Add(worldStreetsAndImageryOverlay);
ShapeFileFeatureLayer streetsLayer = new ShapeFileFeatureLayer(Path.Combine(rootPath, "DallasCounty-4326.shp"));
streetsLayer.Open();
InMemoryFeatureLayer routingLayer = new InMemoryFeatureLayer();
routingLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.CreateSimpleStarStyle(GeoColor.SimpleColors.Red, 30);
routingLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle.FillSolidBrush = new GeoSolidBrush(GeoColor.FromArgb(100, GeoColor.StandardColors.Blue));
routingLayer.ZoomLevelSet.ZoomLevel01.DefaultLineStyle.OuterPen.Color = GeoColor.StandardColors.Red;
routingLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
LayerOverlay routingOverlay = new LayerOverlay();
routingOverlay.Layers.Add("RoutingLayer", routingLayer);
winformsMap1.Overlays.Add("RoutingOverlay", routingOverlay);
InMemoryFeatureLayer routingExtentLayer = new InMemoryFeatureLayer();
routingExtentLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = new AreaStyle(new GeoPen(GeoColor.SimpleColors.Green));
routingExtentLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
routingExtentLayer.InternalFeatures.Add(new Feature(new RectangleShape(-97.080185, 33.013491, -96.465213, 32.490127)));
routingOverlay.Layers.Add("RoutingExtentLayer", routingExtentLayer);
streetsLayer.Open();
Feature startRoad = streetsLayer.FeatureSource.GetFeatureById(txtStartId.Text, ReturningColumnsType.NoColumns);
Feature startPoint = new Feature(startRoad.GetShape().GetCenterPoint().GetWellKnownBinary(), txtStartId.Text);
routingLayer.InternalFeatures.Add(txtStartId.Text, startPoint);
streetsLayer.Close();
winformsMap1.Refresh();
}