C# MapOverlay.SetValue方法代码示例

        private void ShowMyLocationPin()
        {
            myCircle = new Ellipse();
            myCircle.Fill = new SolidColorBrush(Colors.Blue);
            myCircle.Height = 20;
            myCircle.Width = 20;
            myCircle.Opacity = 50;
            myCircle.Visibility = Visibility.Collapsed;

            flashOverlay = new MapOverlay();
            flashOverlay.PositionOrigin = new Point(0.5, 0.5);
            flashOverlay.SetValue(flashColor, true);

            // Create a MapOverlay to contain the circle.
            flashOverlay.Content = myCircle;
            //flashOverlay.GeoCoordinate = coor;
            flashOverlay.SetValue(flashColor, true);

            // Create a MapLayer to contain the MapOverlay.
            MapLayer myLocationLayer = new MapLayer();
            myLocationLayer.Add(flashOverlay);

            // Add the MapLayer to the Map.
            map.Layers.Add(myLocationLayer);

        }

        /// <summary>
        /// Creates a MapOverlay with the specified content and content template.
        /// It will have special setup so that later the dependency properties from MapOverlay
        /// and the attached properties from the target UI can be in a binding.
        /// </summary>
        /// <param name="content">Content of the MapOverlay</param>
        /// <param name="contentTemplate">Template to be used in the MapOverlay</param>
        /// <returns>The MapOverlay that was created</returns>
        internal static MapOverlay CreateMapOverlay(object content, DataTemplate contentTemplate)
        {
            MapOverlay mapOverlay;
            MapOverlayItem presenterHelper;

            mapOverlay = new MapOverlay();
            presenterHelper = new MapOverlayItem(content, contentTemplate, mapOverlay);

            // For insertion and removal purposes, we will have a diferentiation between
            // map overlays that are created by this toolkit and when they are not.
            // This will help to determine, when they are removed, to which
            // we will need to to speacial cleaning
            mapOverlay.SetValue(MapChild.ToolkitCreatedProperty, true);
            mapOverlay.Content = presenterHelper;

            // The dependency properties from MapOverlay, will be binded
            // until the content finally has a UI.
            // At that point, we will try to get the actual ui 
            // and bind the attached properties from the ui to the 
            // dependency properties of the map overlay.
            return mapOverlay;
        }