Map1.MapTools.MouseCoordinate.MouseCoordinateType = MouseCoordinateType.LatitudeLongitude;
            Map1.MapTools.PanZoomBar.IsEnabled = true;
            Map1.MapUnit = GeographyUnit.Meter;
            Map1.MapTools.MouseCoordinate.IsEnabled = true;
            Map1.Background = new SolidColorBrush(Color.FromArgb(255, 255, 255, 255));
            Map1.CurrentExtent = new RectangleShape(533181.490451491, 3144268.68096696, 544626.363014241, 3138546.24468558);
            Map1.Refresh();

            double x = 537530.542025336;
            double y = 3142780.8475;
            GeoFont font = new GeoFont("Arial", 50, true);
            TextStyle txtStyle = new TextStyle("Name", new GeoFont("Arial", 40), new GeoSolidBrush(new GeoColor(255, 0, 0)));
            txtStyle.SuppressPartialLabels = false;

            ///key
            InMemoryFeatureLayer inMemoryFeatureLayer = new InMemoryFeatureLayer();
            inMemoryFeatureLayer.Columns.Add(new FeatureSourceColumn("State"));
            inMemoryFeatureLayer.Columns.Add(new FeatureSourceColumn("Name"));

            ValueStyle vs = new ValueStyle();
            vs.ColumnName = "state";
            vs.ValueItems.Add(new ValueItem("ok", new PointStyle(PointSymbolType.Circle, new GeoSolidBrush(new GeoColor(255, 0, 0)), 20)));
            vs.ValueItems.Add(new ValueItem("fail", new PointStyle(PointSymbolType.Circle, new GeoSolidBrush(new GeoColor(0, 255, 0)), 20)));
            inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(vs);
            //add txt style to inmf
            inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(txtStyle);
            inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
            PointShape Radarpoint = new PointShape(x, y);

            Feature f = new Feature(new PointShape(x, y));
            f.ColumnValues["State"] = "fail";
            // set feature colomn value
            f.ColumnValues["Name"] = "asfoojhiodfhidbfgdbgfdgfdgtf";

            // Add feature to in mem layer
            inMemoryFeatureLayer.InternalFeatures.Add(f);

            LayerOverlay layerFeatureOverlay = new LayerOverlay();

            layerFeatureOverlay.Layers.Add("radar", inMemoryFeatureLayer);
            Map1.Overlays.Add("AustinOverlay", layerFeatureOverlay);