How to use MapApplication.ShowPopup ?

RyanKoehnen

I have a graphics layer that is generated dynamically based on mouse clicks. I would like to show a popup with the attribute info i've set in the graphic to be shown when clicked. The graphic is populated with the geometry from the mouse click and attributes will be based on the result from an ImageServiceIdentifyTask. I can get the popup to appear but it's blank. How do I get this to show the information?

I'm using Draw to generate the graphic, code snippit-

            drawObject = new Draw(MapApplication.Current.Map)
            {
                DrawMode = DrawMode.Point,
                IsEnabled = true,
            };
            drawObject.DrawComplete += DrawObject_DrawComplete;

Then the popup is shown after the draw complete event is fired-

private void DrawObject_DrawComplete(object sender, DrawEventArgs args)
        {
            MapPoint point = args.Geometry as MapPoint;
            point.SpatialReference = MapApplication.Current.Map.SpatialReference;

            Graphic graphic = new Graphic()
            {
                Geometry = point,
            };

            GraphicsLayer graphicsLayer = MapApplication.Current.Map.Layers["IdentifyResultsLayer"] as GraphicsLayer;
            if (graphicsLayer == null)
            {
                graphicsLayer = createResultsLayer();
                MapApplication.Current.Map.Layers.Add(graphicsLayer);
            }
            else
            {
                graphicsLayer.ClearGraphics();
            }

            //test attributes
            graphic.Attributes.Add("ObstacleClearanceSurfaceHeight", 100);
            graphic.Attributes.Add("GroundElevation", 150);
            graphic.Attributes.Add("Difference", 333);

            graphicsLayer.Graphics.Add(graphic);

            MapApplication.Current.ShowPopup(graphic, graphicsLayer);
        }

RyanKoehnen

Hi Katy,

The only thing that I can see that is different between your code and mine is you've defined a symbol for the graphics layer. My test code was always showing up with the default yellow pin that appears when you don't define a symbol. I should add, that if I didn't disable the draw object and clicked the map more than once, the attributes would show on a second click. But the popup would always be blank on the first click. Esri support observed the same behavior when I supplied sample code.

The methods and properties around GetPopupInfo, PopupItem, etc. look intriguing, but there isn't enough guidance in the API documentation for me to figure out how to customize that popup (resize, etc).

Since I couldn't find a workaround I switched gears and went with the InfoWindow from the Silverlight API. I add the InfoWindow to the parent Grid of the Map object after the DrawComplete event-

FrameworkElement parent = VisualTreeHelper.GetParent(MapApplication.Current.Map) as FrameworkElement;
((Grid)parent).Children.Add(infoWindow);

If Esri is planning on putting forth more examples for the Viewer API, a good Popup sample showing how to use the above mentioned classes would be great.