I have a simple query, which is working great...populates my tablegrid but I'm having trouble with the zoom to selected feature functionality. Can someone help?
#region Attribute Query
private void ExcuteAPNQuery_Click(object sender, RoutedEventArgs e)
{
GraphicsLayer selectionGraphicslayer = Map.Layers["MySelectionGraphicsLayer"] as GraphicsLayer;
selectionGraphicslayer.ClearGraphics();
QueryTask queryTask = new QueryTask("http://dgpdch01/ArcGIS/rest/services/Parcels/MapServer/0");
queryTask.ExecuteCompleted += AQueryTask_ExecuteCompleted;
queryTask.Failed += AQueryTask_Failed;
Query query = new ESRI.ArcGIS.Client.Tasks.Query();
query.Where = string.Format("APN = '{0}'", FindAPN.Text);
query.OutFields.Add("*");
query.Text = FindAPN.Text;
_queryTask.ExecuteAsync(query);
}
private void AQueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args)
{
// FeatureSet featureSet = args.FeatureSet;
// GraphicsLayer graphicsLayer = Map.Layers["MySelectionGraphicsLayer"] as GraphicsLayer;
// if (MySelectionGraphicsLayer = null && MySelectionGraphicsLayer.Features.Count > 0)
// {
// Graphic feature = featureSet.Features[0];
// foreach (Graphic feature in featureSet.Features)
{
// feature.Symbol = LayoutRoot.Resources["ResultsFillSymbol"] as FillSymbol;
// graphicsLayer.Graphics.Insert(0, feature);
// Zoom to selected feature (define expand percentage)
ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = Feature.Geometry.Extent;
double expandPercentage = 30;
double widthExpand = selectedFeatureExtent.Width * (expandPercentage / 100);
double heightExpand = selectedFeatureExtent.Height * (expandPercentage / 100);
ESRI.ArcGIS.Client.Geometry.Envelope displayExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(
selectedFeatureExtent.XMin - (widthExpand / 2),
selectedFeatureExtent.YMin - (heightExpand / 2),
selectedFeatureExtent.XMax + (widthExpand / 2),
selectedFeatureExtent.YMax + (heightExpand / 2));
Map.ZoomTo(displayExtent);
// }
ResultsDisplay.Visibility = Visibility.Visible;
}
_drawSurface.IsEnabled = false;
}
private void AQueryTask_Failed(object sender, TaskFailedEventArgs args)
{
MessageBox.Show("Query failed: " + args.Error);
}
