So, I've got a buffer setup to select parcels based x number of feet from a point click and then this data binds with a FeatureDataGrid. Everything works fine the first time I select a point but any subsequent clicks on a different point does not show the data in the FeatureDataGrid for some reason.I'm not sure why the data does not bind the second, third, etc times to BufferResultsQueryDetailsDataGrid when it works fine the first time.Thanks for any help!TroyXAML<!-- Buffer Results Panel --> <userControls:WindowPanel x:Name="BufferResultsWindowPanel" Visibility="Collapsed" Width="Auto" Height="Auto" VerticalAlignment="Bottom" HorizontalAlignment="Left" Margin="30,0,0,50"> <StackPanel> <esri:FeatureDataGrid x:Name="BufferResultsQueryDetailsDataGrid" AutoGenerateColumns="False" MaxHeight="150" VerticalScrollBarVisibility="Auto" Map="{Binding ElementName=Map}" GraphicsLayer="{Binding ElementName=Map, Path=Layers.[BufferResultsGraphicsLayer], UpdateSourceTrigger=PropertyChanged}" Style="{StaticResource FeatureDataGridStyle1}"> <esri:FeatureDataGrid.Columns> <data:DataGridTextColumn Binding="{Binding PPN}" Header="PPN" /> <data:DataGridTextColumn Binding="{Binding OWNERNAME}" Header="Owner Name" /> <data:DataGridTextColumn Binding="{Binding ADDRESS}" Header="Address" /> </esri:FeatureDataGrid.Columns> </esri:FeatureDataGrid> <Button x:Name="BufferResultsExportAllButton" ToolTipService.ToolTip="Export to Excel" Click="ExportAllButton_Click" HorizontalAlignment="Left" Margin="10" Height="25" Width="25"> <Button.Template> <ControlTemplate> <Image Source="/Standard;component/Images/excel2010.png"/> </ControlTemplate> </Button.Template> </Button> </StackPanel> </userControls:WindowPanel>Code Behind C#public void QueryPoint_MouseClick(object sender, ESRI.ArcGIS.Client.Map.MouseEventArgs args) { _pointAndBufferGraphicsLayer = Map.Layers["BufferGraphicsLayer"] as GraphicsLayer; _resultsGraphicsLayer = Map.Layers["BufferResultsGraphicsLayer"] as GraphicsLayer; _pointAndBufferGraphicsLayer.Graphics.Clear(); _resultsGraphicsLayer.Graphics.Clear(); if (IdentifyBorder.Visibility == Visibility.Collapsed) { Map.Cursor = Cursors.Hand; //Identify Graphics Object GraphicsLayer identifyicongraphicsLayer = Map.Layers["IdentifyIconGraphicsLayer"] as GraphicsLayer; identifyicongraphicsLayer.Visible = false; if (BufferButton.IsChecked == true) { //Buffer Tool _geometryService = new GeometryService("http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer"); _geometryService.BufferCompleted += GeometryService_BufferCompleted; _geometryService.Failed += GeometryServiceBuffer_Failed; _queryTaskBuffer = new QueryTask("http://96.61.212.3/GISServices/rest/services/PFR6-17/MapServer/0"); _queryTaskBuffer.ExecuteCompleted += QueryTaskBuffer_ExecuteCompleted; _queryTaskBuffer.Failed += QueryTaskBuffer_Failed; //Buffer Tool _geometryService.CancelAsync(); _queryTask.CancelAsync(); Graphic clickGraphic = new Graphic(); clickGraphic.Symbol = LayoutRoot.Resources["BufferMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; clickGraphic.Geometry = args.MapPoint; // Input spatial reference for buffer operation defined by first feature of input geometry array clickGraphic.Geometry.SpatialReference = Map.SpatialReference; clickGraphic.SetZIndex(2); _pointAndBufferGraphicsLayer.Graphics.Add(clickGraphic); // If buffer spatial reference is GCS and unit is linear, geometry service will do geodesic buffering ESRI.ArcGIS.Client.Tasks.BufferParameters bufferParams = new ESRI.ArcGIS.Client.Tasks.BufferParameters() { BufferSpatialReference = new SpatialReference(4326), OutSpatialReference = Map.SpatialReference, Unit = LinearUnit.Foot, }; //Insert Buffer Radius string bufferlength = BufferTextBox.Text; double doublebufferlength = Convert.ToDouble(bufferlength); bufferParams.Distances.Add(doublebufferlength); bufferParams.Features.Add(clickGraphic); _geometryService.BufferAsync(bufferParams); } } void GeometryService_BufferCompleted(object sender, GraphicsEventArgs args) { Graphic bufferGraphic = new Graphic(); bufferGraphic.Geometry = args.Results[0].Geometry; bufferGraphic.Symbol = LayoutRoot.Resources["BufferSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; bufferGraphic.SetZIndex(1); _pointAndBufferGraphicsLayer.Graphics.Add(bufferGraphic); ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query(); query.ReturnGeometry = true; query.OutSpatialReference = Map.SpatialReference; query.Geometry = bufferGraphic.Geometry; query.OutFields.Add("OWNERNAME,PPN,ADDRESS"); _queryTaskBuffer.ExecuteAsync(query); } private void QueryTaskBuffer_ExecuteCompleted(object sender, QueryEventArgs args) { if (args.FeatureSet.Features.Count < 1) { MessageBox.Show("No features found"); return; } else { if (BufferResultsWindowPanel.IsOpen == false) { BufferResultsWindowPanel.Toggle(); } foreach (Graphic selectedGraphic in args.FeatureSet.Features) { selectedGraphic.Symbol = LayoutRoot.Resources["ParcelSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; _resultsGraphicsLayer.Graphics.Add(selectedGraphic); //Populates the Data Grid with the results and shows the corresponding Window Panel BufferResultsQueryDetailsDataGrid.ItemsSource = selectedGraphic.Attributes; } BufferResultsWindowPanel.Visibility = Visibility.Visible; } } private void GeometryServiceBuffer_Failed(object sender, TaskFailedEventArgs args) { MessageBox.Show("Geometry service failed: " + args.Error); } private void QueryTaskBuffer_Failed(object sender, TaskFailedEventArgs args) { MessageBox.Show("Query failed: " + args.Error); } #endregion
