need help starting address-to-location computations

SangamLama

Hi there, I have a SL application which speaks to a wcf service. What I'm trying to do is -- I need to find lat/long of about 20 addresses and pin them on the map. All the dirty of work sending requests to arcgis should be done in the wcf side. The only thing SL side does is it calls the wcf function and gets data back, and in turn pins them on the map.

So can someone please please please post a sample link, or an example? It's important that WCF side carries out all the request and processing . And it is also very important that 20 addresses are sent from silverlight side as an input parameter to the wcf function.

I looked at Interactive samples of SL version, but the tutorial does everything in the SL side. And I'm not being able carry out separation of concern here.

Thanks!

nakulmanocha

Here is one way to do this..

----------------
  SL side code
----------------

public MainPage()
        {
            InitializeComponent();
            MyGeometryServiceClient client = new ServiceReference1.MyGeometryServiceClient();
                      
            client.GeocodeAddressAsync("400 Market Street", "San Francisco", "CA", "94111");
            client.GeocodeAddressCompleted += client_GeocodeAddressCompleted;
           
        }

        void client_GeocodeAddressCompleted(object sender, GeocodeAddressCompletedEventArgs e)
        {
            ESRI.ArcGIS.Client.Geometry.Geometry geom = e.Result;
            GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
            graphicsLayer.ClearGraphics();

            Graphic graphic = new Graphic()
            {
                Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol,
                Geometry = geom
            };

           
            graphicsLayer.Graphics.Add(graphic);
         
           
        }

--------------
WCF side code
---------------

[ServiceContract(Namespace = "")]
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class MyGeometryService
    {
        private Geometry firstCandGeom;
       
        // Add more operations here and mark them with [OperationContract]
        [OperationContract]
        public Geometry GeocodeAddress(string address, string city, string state, string zip)
        {

            Locator locatorTask = new Locator("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Locators/ESRI_Geocode_USA/GeocodeServer");
            locatorTask.AddressToLocationsCompleted += new EventHandler<AddressToLocationsEventArgs>(locatorTask_AddressToLocationsCompleted);
            locatorTask.Failed += new EventHandler<TaskFailedEventArgs>(locatorTask_Failed);
            AddressToLocationsParameters addressParams = new AddressToLocationsParameters();
            Dictionary<string, string> fullAddress = addressParams.Address;

            if (!string.IsNullOrEmpty(address))
                fullAddress.Add("Address", address);
            if (!string.IsNullOrEmpty(city))
                fullAddress.Add("City", city);
            if (!string.IsNullOrEmpty(state))
                fullAddress.Add("State", state);
            if (!string.IsNullOrEmpty(zip))
                fullAddress.Add("Zip", zip);

          
            locatorTask.AddressToLocationsAsync(addressParams);
            do
            {
                Thread.Sleep(100);

            } while (locatorTask.IsBusy);

           
            return firstCandGeom;

        }

        void locatorTask_Failed(object sender, TaskFailedEventArgs e)
        {
           
        }
        public void locatorTask_AddressToLocationsCompleted(object sender, AddressToLocationsEventArgs e)
        {
            List<AddressCandidate> geoResponse = e.Results;
            AddressCandidate firstCand = geoResponse[0];
            firstCandGeom = firstCand.Location;

        }
    }