Overview Map Binding

ShaningYu — Wed, 06 Oct 2010 11:35:06 GMT

I created a user control for Overview Map using ESRI's source code in http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#OverviewMap
            <esri:OverviewMap x:Name="MyOverviewMap" Margin="35,25,35,25" MaximumExtent="-180,-90,180,90"
                    Map="{Binding ElementName=_Map}">
                <esri:OverviewMap.Layer>
                    <esri:ArcGISTiledMapServiceLayer ID="TopoLayer"
                           Url="http://services.arcgisonline.com/ArcGIS/rest/services/NPS_Physical_World_2D/MapServer"/>
                </esri:OverviewMap.Layer>
            </esri:OverviewMap>

where _Map is defined in its .xaml.cs file:
        private MainPage _Parent;
        private Map _Map;

        #region Public Methods
        public Overview()   {
            InitializeComponent();
            ...
        }

        public void SetMap(Map TheMap) {
            _Map = TheMap;
        }

        public void SetParent(MainPage TheParent) {
            _Parent = TheParent;
        }

However, the Overview Map is still empty. I debugged, and observed that _Map contains 4 layers (not null). There must be something missing for the binding. If you know, please point it our. Thanks.

Re: Overview Map Binding

DarinaTchountcheva — Wed, 06 Oct 2010 12:32:46 GMT

Hi Shaning,

I think you are seeing an issue with the OverviewMap discussed in this forum:

http://forums.arcgis.com/threads/10033-Overview-map-does-not-show-contents-until-after-view-extent-changed?highlight=overviewmap

I am looking for a workaround of the same issue.
Hope, someone has already found it. 🙂

I will post back when I come up with a solution.

Re: Overview Map Binding

ShaningYu — Wed, 06 Oct 2010 14:19:29 GMT

The problem has been solved by referring http://forums.arcgis.com/threads/14476-Magnifying-Glass-Map-Binding.

topic Overview Map Binding in ArcGIS API for Silverlight Questions

Overview Map Binding

Re: Overview Map Binding

Re: Overview Map Binding