Latest Contributions by JoeHershman

What u said is correct..Almost all locations are very closer....How can i expand to reach a minimal size??? Map has a MinimumResolution property that defines the lowest resolution that can be zoomed to -Joe ... View more

Have you confirmed that the Map property on the Navigation tool is set correctly? ... View more

Assuming you are always having the button content be the name of the state you can avoid a long if block with;         private void RadioButton_Click(object sender, RoutedEventArgs e)         {             // Query task initialization.             QueryTask queryTask = new QueryTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/" +               "Demographics/ESRI_Census_USA/MapServer/5");             queryTask.ExecuteCompleted += QueryTask_ExecuteCompleted;             queryTask.Failed += QueryTask_Failed;               // Query task parameters. Return geometry, state, and population density.             Query query = new Query();             query.ReturnGeometry = true;             query.OutFields.AddRange(new string[] { "STATE_NAME"});                          //The Clicked Radio button is always the one selected..             RadioButton button = sender as RadioButton;             if ( button == null ) return;               query.Where = "STATE_NAME = '" + button.Content + "'";               queryTask.ExecuteAsync(query);         } ... View more

The visible columns is tied to the OutFields collection so the easiest way is to just set the OutFields to only the ones you want.  But it seems you want attributes available for the map tip that do not show up. While I have not done it FeatureDataGrid inherits from DataGrid so I assume you can set the Columns like you have started to below.  In order to do this you need to first set the AutoGererateColumns  property on the FeatureDataGrid to false.  Then in your Columns definition only put the ones you do want to see\ Hope that helps -Joe ... View more

Sorry, when I looked at that later I see it would not work but we don't want to be using ItemsSource with the FeatureDataGrid, that is there because it inherits from DataGrid but really should be working with the GraphicsLayer property as the binding property. You said you had it working to load the entire FeatureLayer data using code the Jenifer provided.  If you go back to that setup than the only part missing is filtering the list after the relationship query.  In that setup you have a class level variable l which is the FeatiureLayer.  I am going to call that _featureLayer because I hate having a variable named l. Right now you have         private void QueryTask_ExecuteRelationshipQueryCompleted(object sender, RelationshipEventArgs e)         {               IEnumerable<Graphic> graphics = e.Result.RelatedRecordsGroup.First().Value;                RelationshipResult pr = e.Result;              if (pr.RelatedRecordsGroup.Count == 0)              {                    RelatedRowsDataGrid.ItemsSource = null;              }              else              {                  foreach (var pair in pr.RelatedRecordsGroup)                  {                        RelatedRowsDataGrid.ItemsSource = pair.Value;                      MyFDG.ItemsSource = pair.Value;                                          }              }         } What needs to happen in the RelationshipComplete handler is that the FeatureLayer (_featureLayer) gets filtered to only show the correct records.         private void QueryTask_ExecuteRelationshipQueryCompleted(object sender, RelationshipEventArgs e)         {             //This line gets you the all features returned from the Relationship Query             IEnumerable<Graphic> graphics = e.Result.RelatedRecordsGroup.First().Value;                          // There are two ways to filter either using Where clause or using the ObjectIDs property             // before you set the Where clause to return all records 1=1 I think             // Here instead lets use the ObjectIDs approach, first get rid of the old Where                    _featureLayer.Where = null //remember _featureLayer is l                                      //ObjectIDs takes an int[] and with a little Linq we can get that array             // I am assumning you have included OBJECTID in your outfields when you defined the query                          int[] objectIds = graphics.Select(g => (int)g.Attributes["OBJECTID"]).ToArray();               //now set the ObjectIDs on our FeatureLayer                          _featureLayer.ObjectIDs = objectIds;               //Update the FeatureLayer to 'redraw' the new filtered set of Features                     _featureLayer.Update();               //And I hope this worked.  you could rebind the layer to the grid to make sure all is good             MyFDG.GraphicsLayer = _featureLayer;           } Hope that helps -Joe ... View more