Latest Contributions by JenniferNery

By custom attributes, do you mean the service does not define these fields? Are you working with ServiceFeatureTable? If yes, there is a LoadAll that will return all fields defined by service, the other QueryFeatures method will return minimum set of attributes (i.e. objectIdField, typeIdField, fields used for rendering, etc.) https://developers.arcgis.com/net/latest/wpf/api-reference//html/T_Esri_ArcGISRuntime_Data_QueryFeatureFields.htm ... View more

Related Tables are coming soon so hopefully you can take advantage of that when it comes out. Meanwhile, you can try the following code where spatial table is added to the map and non-spatial table is populated upfront. You can use GeoViewTapped to get the feature of interest and retrieve its 'GlobalId'. Based on service metadata, the non-spatial table is related by 'ManholeNumber' field just as you had in your code. The only difference is GUIDs are stored in uppercase. This doesn't really mimic the queryRelated request in arcgis.com but should return the same feature you would expect.         xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013">     <Grid>         <esri:MapView x:Name="MyMapView" GeoViewTapped="MyMapView_GeoViewTapped"/>     </Grid>‍‍‍‍‍‍‍‍         public MainWindow()         {             InitializeComponent();             MyMapView.Map = new Map(Basemap.CreateTopographic());             MyMapView.Map.OperationalLayers.Add(new FeatureLayer(new Uri("http://services6.arcgis.com/v1B7paWSaOfBIIVv/ArcGIS/rest/services/ManholeInspections/FeatureServer/0")));         }         ServiceFeatureTable _table;         private async void MyMapView_GeoViewTapped(object sender, GeoViewInputEventArgs e)         {                         var result = await MyMapView.IdentifyLayersAsync(e.Position, 1, false, 1);             foreach (var r in result)             {                 var globalIdField = ((r.LayerContent as FeatureLayer)?.FeatureTable as ArcGISFeatureTable)?.GlobalIdField;                 if (string.IsNullOrEmpty(globalIdField))                     continue;                 foreach (var g in r.GeoElements)                 {                     var parameters = new QueryParameters()                     {                         WhereClause = $"ManholeNumber='{{{g.Attributes[globalIdField]?.ToString()?.ToUpper()}}}'"                     };                     if (_table == null)                     {                         _table = new ServiceFeatureTable(new Uri("http://services6.arcgis.com/v1B7paWSaOfBIIVv/ArcGIS/rest/services/ManholeInspections/FeatureServer/1"))                         {                             FeatureRequestMode = FeatureRequestMode.ManualCache                         };                         await _table.PopulateFromServiceAsync(new QueryParameters() { WhereClause = "1=1" }, true, new string[] { "*" });                     }                     var relatedFeatures = await _table.QueryFeaturesAsync(parameters);                                    }             }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ ... View more

This should work in v100. What event are you using and what's e.GetPosition(MainMapView)'s value when you get this error?  var position = e.GetPosition(MainMapView); System.Diagnostics.Debug.WriteLine(position.ToString());‍‍ You can also try the following code. Using GeoViewTapped, you can pass either specific layer or identify all layers. In the identified result, notice that ArcGISMapImageLayer have results in SublayerResults and FeatureLayer have results in GeoElements.         xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013">     <Grid>         <esri:MapView x:Name="MyMapView" GeoViewTapped="MyMapView_GeoViewTapped">             <esri:Map>                 <esri:ArcGISMapImageLayer Source="http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer" />                 <esri:FeatureLayer>                     <esri:ServiceFeatureTable Source="http://sampleserver6.arcgisonline.com/arcgis/rest/services/Notes/FeatureServer/0" />                 </esri:FeatureLayer>             </esri:Map>         </esri:MapView>     </Grid>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍         private async void MyMapView_GeoViewTapped(object sender, GeoViewInputEventArgs e)         {             try             {                 Layer layer = null;                 layer = MyMapView.Map.AllLayers.OfType<ArcGISMapImageLayer>().FirstOrDefault();                 var identifyResult = await MyMapView.IdentifyLayerAsync(layer, e.Position, 1, false, 1);                 DisplayResult(identifyResult); // results in SublayerResults                 layer = MyMapView.Map.AllLayers.OfType<FeatureLayer>().FirstOrDefault();                 identifyResult = await MyMapView.IdentifyLayerAsync(layer, e.Position, 1, false, 1);                 DisplayResult(identifyResult); // results in GeoElements                 var identifyResults = await MyMapView.IdentifyLayersAsync(e.Position, 1, false, 1);                 foreach (var result in identifyResults)                                        DisplayResult(result);                                }             catch (Exception ex)             {                 MessageBox.Show(ex.Message);             }         }         private string GetGeoElements(IEnumerable<GeoElement> geoElements)         {             var sb = new StringBuilder();             foreach (var g in geoElements)                 foreach (var a in g.Attributes)                     sb.AppendLine($"{a.Key}={a.Value}");             return sb.ToString();         }         private string GetSublayerResult(IEnumerable<IdentifyLayerResult> sublayerResults)         {             var sb = new StringBuilder();             foreach (var r in sublayerResults)             {                 sb.AppendLine($"{r.LayerContent.Name} has {r.GeoElements.Count} results");                 var summary = GetGeoElements(r.GeoElements);                 if (!string.IsNullOrEmpty(summary))                     sb.AppendLine(summary);             }             return sb.ToString();         }         private void DisplayResult(IdentifyLayerResult result)         {             var sb = new StringBuilder();             var summary = GetGeoElements(result.GeoElements);             if (!string.IsNullOrEmpty(summary))                 sb.AppendLine(summary);             summary = GetSublayerResult(result.SublayerResults);             if (!string.IsNullOrEmpty(summary))                 sb.AppendLine(summary);             summary = sb.ToString();             if(!string.IsNullOrEmpty(summary))                 MessageBox.Show(summary);         }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ ... View more