private async void MyDrawObject_DrawComplete(object sender, DrawEventArgs args)
{
try
{
_myDrawObject.IsEnabled = false;
if (_cts != null)
{
_cts.Cancel();
}
_cts = new CancellationTokenSource();
QueryTask queryTask =
new QueryTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/TaxParcel/AssessorsParcelCharacteristics/MapServer/1");
Query query = new Query()
{
Geometry = args.Geometry,
ReturnGeometry = true,
OutSpatialReference = MyMap.SpatialReference
};
QueryResult parcelsToIntersectResult = await queryTask.ExecuteTaskAsync(query, _cts.Token);
List <Graphic> graphicList = new List <Graphic>();
graphicList.Add(new Graphic()
{
Geometry = args.Geometry
});
SimplifyResult simplifiedIntersectGeometryResult = await _geometryService.SimplifyTaskAsync(graphicList, _cts.Token);
IntersectResult intersectedParcelsResult = await _geometryService.IntersectTaskAsync(parcelsToIntersectResult.FeatureSet.ToList(), simplifiedIntersectGeometryResult.Results[0].Geometry, _cts.Token);
Random random = new Random();
foreach (Graphic g in intersectedParcelsResult.Results)
{
SimpleFillSymbol symbol = new SimpleFillSymbol()
{
Fill = new System.Windows.Media.SolidColorBrush(
System.Windows.Media.Color.FromArgb(255, (byte)random.Next(0, 255), (byte)random.Next(0, 255),
(byte)random.Next(0, 255))),
BorderBrush = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Black),
BorderThickness = 1
};
g.Symbol = symbol;
_intersectGraphicsLayer.Graphics.Add(g);
}
}
catch (Exception ex)
{
if (ex is ServiceException)
{
MessageBox.Show(String.Format("{0}: {1}", (ex as ServiceException).Code.ToString(), (ex as ServiceException).Details[0]), "Error", MessageBoxButton.OK);
return;
}
}
}