async void _myDrawObject_DrawComplete(object sender, DrawEventArgs e)
{
if (e.Geometry == null)
{
ChartContainer.Visibility = System.Windows.Visibility.Collapsed;
return;
}
try
{
_myDrawObject.IsEnabled = false;
this.Cursor = Cursors.Wait;
_lineGraphicLayer.Graphics[0].Geometry = e.Geometry;
if (_cts != null)
{
_cts.Cancel();
}
_cts = new CancellationTokenSource();
Geoprocessor geoprocessorTask = new Geoprocessor(
"http://elevation.arcgis.com/arcgis/rest/services/Tools/ElevationSync/GPServer/Profile");
List <GPParameter> parameters = new List <GPParameter>();
parameters.Add(new GPFeatureRecordSetLayer("InputLineFeatures", e.Geometry));
parameters.Add(new GPString("returnM", "true"));
parameters.Add(new GPString("returnZ", "true"));
GPExecuteResults results = await geoprocessorTask.ExecuteTaskAsync(parameters, _cts.Token);
if (results == null || results.OutParameters.Count == 0 || (results.OutParameters[0] as GPFeatureRecordSetLayer).FeatureSet.Features.Count == 0)
{
MessageBox.Show("Fail to get elevation data. Draw another line");
return;
}
ESRI.ArcGIS.Client.Geometry.Polyline elevationLine =
(results.OutParameters[0] as GPFeatureRecordSetLayer).FeatureSet.Features[0].Geometry
as ESRI.ArcGIS.Client.Geometry.Polyline;
foreach (MapPoint p in elevationLine.Paths[0])
{
p.M = Math.Round(p.M / 1000, 2);
p.Z = Math.Round(p.Z, 2);
}
MapPoint lastPoint = elevationLine.Paths[0][elevationLine.Paths[0].Count - 1];
lblDistance.Text = string.Format("Total Distance {0} Kilometers", lastPoint.M.ToString());
(ElevationChart.Series[0] as LineSeries).ItemsSource = elevationLine.Paths[0];
ChartContainer.Visibility = System.Windows.Visibility.Visible;
}
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;
}
}
finally
{
this.Cursor = Cursors.Arrow;
}
}
private void MyMap_MouseClick(object sender, ESRI.ArcGIS.Client.Map.MouseEventArgs e)
{
IsBusy = true;
// Cancel any outstanding Tasks
_gpTask.CancelAsync();
// Get the GraphicsLayer
GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
graphicsLayer.ClearGraphics();
e.MapPoint.SpatialReference = MyMap.SpatialReference;
// Add a graphic at the click point
Graphic graphic = new ESRI.ArcGIS.Client.Graphic()
{
Geometry = e.MapPoint,
Symbol = LayoutRoot.Resources["DefaultClickSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol
};
graphic.SetZIndex(1);
graphicsLayer.Graphics.Add(graphic);
// Create the graphic to submit.
Graphic g = new Graphic()
{
Geometry = _mercator.ToGeographic(e.MapPoint)
};
// Create a new list of GP Parameters
List <GPParameter> gpParams = new List <GPParameter>();
// We want to specify input attributes - create a new FeatureSet.
FeatureSet featureSet = new FeatureSet();
// Create the Fields and add one called "VALUE".
featureSet.Fields = new List <Field> {
new Field()
{
FieldName = "VALUE", Type = Field.FieldType.String, Alias = "VALUE"
}
};
//var fs = new FeatureSet(new List<Graphic> { g });
// Add the graphic to the FeatureSet
featureSet.Features.Add(g);
// Set the graphic's attribute
featureSet.Features[0].Attributes["VALUE"] = valueText.Text;
// Add the GP Paramr
gpParams.Add(new GPFeatureRecordSetLayer("InputFeatures", featureSet));
gpParams.Add(new GPLinearUnit("Distance", esriUnits.esriKilometers, 500));
// Register an inline handler for ExecuteCompleted event
_gpTask.ExecuteCompleted += (s, e1) =>
{
// Clear the graphics layer (will remove the input Pushpin)
graphicsLayer.Graphics.Clear();
// Get the results
GPExecuteResults results = e1.Results;
GPFeatureRecordSetLayer rs = results.OutParameters[0] as GPFeatureRecordSetLayer;
// Get the result feature
Graphic graphicBuff = rs.FeatureSet.Features[0];
// Set the symbol
graphicBuff.Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol;
// Add to the layer
graphicsLayer.Graphics.Add(graphicBuff);
// Stop the progress bar
IsBusy = false;
};
// Register an inline handler for the failed event (just in case)
_gpTask.Failed += (s2, e2) =>
{
MessageBox.Show(e2.Error.Message);
IsBusy = false;
};
// Execute the Buffer asynchronously
_gpTask.ExecuteAsync(gpParams);
}
