private async Task <Graphic> GetRouteGraphicAsync(MapPoint startLocation, MapPoint endLocation)
{
// Wait until previous routing is completed before doing another
if (_isRouting)
{
return(null);
}
_isRouting = true;
RouteParameters routeParameters = await _routeTask.GetDefaultParametersAsync();
routeParameters.OutSpatialReference = MapViewService.SpatialReference;
routeParameters.ReturnDirections = false;
routeParameters.DirectionsLengthUnit = LinearUnits.Kilometers;
// Add endpoints to for the route
List <Graphic> graphicsStops = new List <Graphic>();
graphicsStops.Add(new Graphic()
{
Geometry = startLocation
});
graphicsStops.Add(new Graphic()
{
Geometry = endLocation
});
var stops = new FeaturesAsFeature();
stops.Features = graphicsStops;
stops.SpatialReference = graphicsStops[0].Geometry.SpatialReference;
routeParameters.Stops = stops;
try
{
// Since we are ignoring cancellation just give a new token everytime
var routeResult = await _routeTask.SolveAsync(routeParameters, new CancellationToken());
_isRouting = false;
if (routeResult.Routes.Count > 0)
{
return(routeResult.Routes[0].RouteGraphic);
}
}
catch (Exception)
{
// At the moment exception is thrown if route task couldn't solve the route so catch
}
_isRouting = false;
return(null);
}
private async Task CalculateRouteAsync()
{
try
{
progress.Visibility = Visibility.Visible;
RouteParameters routeParams = await _routeTask.GetDefaultParametersAsync();
routeParams.OutSpatialReference = MyMapView.SpatialReference;
routeParams.ReturnDirections = false;
routeParams.SetStops(_stopsGraphicsOverlay.Graphics);
RouteResult routeResult = await _routeTask.SolveAsync(routeParams);
if (routeResult.Routes.Count > 0)
{
_routeGraphicsOverlay.Graphics.Clear();
var route = routeResult.Routes.First().RouteFeature;
_routeGraphicsOverlay.Graphics.Add(new Graphic(route.Geometry));
var meters = GeometryEngine.GeodesicLength(route.Geometry, GeodeticCurveType.Geodesic);
txtDistance.Text = string.Format("{0:0.00} miles", LinearUnits.Miles.ConvertFromMeters(meters));
panelRouteInfo.Visibility = Visibility.Visible;
}
}
catch (AggregateException ex)
{
var innermostExceptions = ex.Flatten().InnerExceptions;
if (innermostExceptions != null && innermostExceptions.Count > 0)
{
MessageBox.Show(innermostExceptions[0].Message);
}
else
{
MessageBox.Show(ex.Message);
}
}
catch (System.Exception ex)
{
MessageBox.Show("Error: " + ex.Message);
}
finally
{
progress.Visibility = Visibility.Collapsed;
}
}
private async Task SetupRouteTask()
{
if (!IsOnline)
{
_routeTask = new LocalRouteTask(_localRoutingDatabase, _networkName);
}
else
{
_routeTask = new OnlineRouteTask(new Uri(_onlineRoutingService));
}
if (_routeTask != null)
{
_routeParams = await _routeTask.GetDefaultParametersAsync();
}
}
private async Task CalculateRoute()
{
StartLocationText = string.Empty;
EndLocationText = string.Empty;
Directions = string.Empty;
_routeGraphicsLayer.Graphics.Clear();
_stopsGraphicsLayer.Graphics.Clear();
try
{
// Mouseclick 1:
MapPoint startLocation = await mapView1.Editor.RequestPointAsync();
_stopsGraphicsLayer.Graphics.Add(new Graphic()
{
Geometry = startLocation
});
StartLocationText = " X: " + Math.Round(startLocation.X, 0).ToString() + " Y: " + Math.Round(startLocation.Y, 0).ToString();
// Mouseclick 2:
MapPoint endLocation = await mapView1.Editor.RequestPointAsync();
_stopsGraphicsLayer.Graphics.Add(new Graphic()
{
Geometry = endLocation
});
EndLocationText = " X: " + Math.Round(endLocation.X, 0).ToString() + " Y: " + Math.Round(endLocation.Y, 0).ToString();
Esri.ArcGISRuntime.Tasks.NetworkAnalyst.RouteParameters routeParams = await _routeTask.GetDefaultParametersAsync();
routeParams.OutSpatialReference = mapView1.SpatialReference;
routeParams.ReturnDirections = true;
routeParams.DirectionsLengthUnit = LinearUnits.Kilometers;
routeParams.DirectionsLanguage = new System.Globalization.CultureInfo("en");
List <Graphic> graphicsStops = new List <Graphic>();
graphicsStops.Add(new Graphic(startLocation));
graphicsStops.Add(new Graphic(endLocation));
FeaturesAsFeature stops = new FeaturesAsFeature(graphicsStops);
stops.SpatialReference = mapView1.SpatialReference;
routeParams.Stops = stops;
RouteResult routeResult = await _routeTask.SolveAsync(routeParams);
if (routeResult.Routes.Count > 0)
{
Graphic graphic = new Graphic(routeResult.Routes[0].RouteGraphic.Geometry);
_routeGraphicsLayer.Graphics.Add(graphic);
List <string> directions = new List <string>();
foreach (var item in routeResult.Routes[0].RouteDirections)
{
directions.Add(" " + item.Text + "\r\n");
}
Directions = String.Join <string>(String.Empty, directions);
}
}
catch (AggregateException ex)
{
var innermostExceptions = ex.Flatten().InnerExceptions;
if (innermostExceptions != null && innermostExceptions.Count > 0)
{
MessageBox.Show(innermostExceptions[0].Message);
}
else
{
MessageBox.Show(ex.Message);
}
}
catch (System.Exception ex)
{
MessageBox.Show("Error: " + ex.Message);
}
}