Latest Contributions by MichaelMacDonald

Did you reproject the geometries coming from the GeoRSS feed to WebMercator using the ESRI.ArcGIS.Client.Projection.WebMercator class? Basically did the following with each of the coordinates: g = New MapPoint(x, y, New SpatialReference(4326)) mpGeom = ESRI.ArcGIS.Client.Bing.Transform.GeographicToWebMercator(g) ... View more

Did you add a reference to ESRI.ArcGIS.Client.Toolkit.DataSources ? Thanks, very much for the help.  I ended up uninstalling everything and reinstalling and I think it's fine now (at least the reference is fine). However, I'm having trouble matching up two different coordinate systems.  All of my layers are in web mercator and I'm importing a GeoRSS feed in LAT/LONG.  I understand that I have to use the GraphicsLayer to transform each of the points to the new projected coordinate system but how do I access each of the points ? in GraphicsLayer_Initialized?  or is there some event on the GeoRSS layer? Thanks much, ... View more

Instead of using a point for querying, create a small envelope around the point. Ie. this create a box 2x2 pixels around the click-point:     new Envelope(p.X - map.Resolution, p.Y - map.Resolution,p.X + map.Resolution, p.Y + map.Resolution) and use this to query for your points. Thanks, I've tried that, can't keep to get it going properly.  It still doesn't seem to be selecting the point I want.  There is no way to use geoprocessing to grab the closest point to a mapclick is there? Or would that take significantly longer? ... View more

If you switch to using a featurelayer, remember to change the URL to use a layer within the service. For instance add /0 to the URL to select the feature layer to display. Yeah I tried that too, still getting this error: Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; MS-RTC LM 8; .NET4.0C; .NET4.0E) Timestamp: Tue, 11 May 2010 19:27:50 UTC Message: Unhandled Error in Silverlight 2 Application Invalid or unsupported json   at ESRI.ArcGIS.Client.Layer.OnInitializationFailed(EventArgs e)    at ESRI.ArcGIS.Client.Layer.Initialize()    at ESRI.ArcGIS.Client.FeatureLayer.info_Error(Object sender, TaskFailedEventArgs e)    at ESRI.ArcGIS.Client.FeatureLayerInfo.OnError(Exception err)    at ESRI.ArcGIS.Client.FeatureLayerInfo.FromJson(String json)    at ESRI.ArcGIS.Client.FeatureLayerInfo.Execute_Completed(Object sender, DownloadStringCompletedEventArgs e)    at System.Net.WebClient.OnDownloadStringCompleted(DownloadStringCompletedEventArgs e)    at System.Net.WebClient.DownloadStringOperationCompleted(Object arg) ... View more

From an ArcGISDynamicmapServiceLayer, you can use either 'Identify' which returns the features of the map service near a point (example : http://resources.esri.com/help/9.3/arcgisserver/apis/silverlight/samples/start.htm#Identify ) or a Query task which returns the features of a layer (example : http://resources.esri.com/help/9.3/arcgisserver/apis/silverlight/samples/start.htm#SpatialQuery). If you are using the version 2.0 of the API, you can also consider using a featureLayer in SelectionOnly mode (Example : http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#FeatureLayerSelection). Hope this help. /Dominique Dominque, it seems to be the FeatureLayer that's not showing up -- it's working just fine when I set it as a ArcGISDynamicmapServiceLayer in the XAML, but when I try it as a "FeatureLayer" with the selection mode shown in the sample I don't even see the layer rendering on load.  Perhaps it's the way I have the service configured?  It's an MSD source obviously.  Any idea what I could be doing wrong? ... View more

http://resources.arcgis.com/content/arcgis-api-silverlightwpf ... View more