Latest Contributions by JoeHershman

See if this works     Where = "CNAME IN ('CULBERSON', 'JEFF DAVIS', 'LOVING', 'REEVES', 'WARD', 'WINKLER')" ... View more

How I have it setup which you would have to do slightly different (but pretty similar) is have a private field to hold the relationship id (in my case OID) so in my ExecuteComplete of the spatial query         //The OID of the current related feature that the user selected         private int _currentLocationId;         private void SpatialQueryCompleted(object sender, QueryEventArgs e)         {             if ( e.FeatureSet.Features.Count() == 0 ) return;             Graphic graphic = e.FeatureSet.Features[0];             //Assign the location OID to internal field so can use when a new record is created             _currentLocationId = Convert.ToInt32(graphic.Attributes["OBJECTID"]);             RelationshipParameter parameter = new RelationshipParameter                                                   {                                                       ObjectIds = new[] { _currentLocationId },                                                       RelationshipId = 0,                                                       OutFields = new[] { "OBJECTID" }                                                   };             _queryTask.ExecuteRelationshipQueryCompleted += RelationshipQueryCompleted;             _queryTask.ExecuteRelationshipQueryAsync(parameter);         } Then in the code where a new record is added         private void ExecuteAdd()         {             //Create the new Graphic object and set the default values for the attributes             Graphic graphic = new Graphic(); ...             graphic.Attributes.Add("LOCATION_OID", _currentLocationId);             _featureLayer.Graphics.Add(graphic);             //Set the bound GraphicsSource so the DataForm is loaded with the new record             GraphicSource = graphic;         } in your case you would set the _currentLocationId to the attribute that you are using but other than that it is about the same.  What I also do is not include that relationship field in the OutFields on the FeatureLayer, so while I am setting it and creating the relationship the user does not see it For a delete, I have not done this, but I think you would need to add a Delete button like the Add button and Remove from the FeatureLayer.  Maybe something along these lines         private void DeleteButton_Click(object sender, System.Windows.RoutedEventArgs e)         {             _featureLayer.Graphics.Remove(MyFeatureDataGrid.SelectedGraphics[0]);         } ... View more

My bad, I actually had not seen the updated FeatureDataGrid.  Surprised no one though to expose that property, but looking at the code does not seem there would be anyway without making your own modified FeatureDataGrid ... View more

Hi, I'm looking for a way to get the Geometry Type of a layer, giving its URL (e.g. http://services.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_Average_Household_Size/MapServer/1 returns esriGeometryPolygon in REST but how can I get it programmatically? Thanks a lot, Miri AFAIK the only way would be to actually make the rest call and find it from the returned json object using WebClient.         private void GetLayerDescription()         {             var webClient = new WebClient();             webClient.OpenReadCompleted += DownloadComplete;             webClient.OpenReadAsync(new Uri("http://services.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_Average_Household_Size/MapServer/1?f=json"));         }         private string _geometryType;         private void DownloadComplete(object sender, OpenReadCompletedEventArgs e)         {             if ( e.Error != null ) return;             var jsonObject = JsonValue.Load(e.Result) as JsonObject;             if ( jsonObject == null ) return;             JsonValue geometryTypeJsonValue;             if ( jsonObject.TryGetValue("geometryType", out geometryTypeJsonValue) )             {                 _geometryType = geometryTypeJsonValue;             }         } (JsonObject is in the System.Json assembly) Good Luck -Joe ... View more

I was playing around with this and I notice that after initialization the VisibleLayers collection is still null (which would explain the error).  It is not until a method call has been made to SeLayerVisisibility has been made that this collection is actually available.  This explains the behavior you see because clicking a layer on the Legend will make a call internally to SetLayerVisibility. I checked this on both 3.0 and 2.4 and see the same behavior. Personally, I would consider this a bug.  The idea that you cannot check what layers are visible prior to turning one on or off does not make any sense.  I cannot believe this has not been noticed before, but I have not seen a post about it. I found a work around that seems to work.  Add a LayersInitialized handler and for a SublayerId you know is Visible call SetLayerVisibility(id, false) then SetLayerVisibility(id, true) immediately after that.  This seems to initialize the VisibleLayers collection. Hope that helps -Joe ... View more

So I re-installed ArcGIS and Python and the SearchCursor works now, so was a problem with the install. Thanks for all the help -Joe ... View more

The way to change visibility is to use the SetLayerVisibility method on the ArcGISDynamicMapServiceLayer instead of removing/adding from the VisibleLayers collections, something like.             var westTexas = TabletMap.Layers["West Texas"] as ArcGISDynamicMapServiceLayer;             bool isVisible = westTexas.VisibleLayers.Contains(0);             westTexas.SetLayerVisibility(0, !isVisible); Hope that helps -Joe ... View more

One thing that caused me some initial headaches was the System.Windows.Interactivity assembly.  Have you downloaded the Blend 5.0 preview and made sure you are using that assembly? Good Luck ... View more