private void ConfigureThenRoute()
{
// Guard against error conditions.
if (_routeParameters == null)
{
ShowMessage("Not ready yet", "Sample isn't ready yet; define route parameters first.");
return;
}
if (_stopsOverlay.Graphics.Count < 2)
{
ShowMessage("Not enough stops", "Add at least two stops before solving a route.");
return;
}
// Clear any existing route from the map.
_routeOverlay.Graphics.Clear();
// Configure the route result to include directions and stops.
_routeParameters.ReturnStops = true;
_routeParameters.ReturnDirections = true;
// Create a list to hold stops that should be on the route.
List <Stop> routeStops = new List <Stop>();
// Create stops from the graphics.
foreach (Graphic stopGraphic in _stopsOverlay.Graphics)
{
// Note: this assumes that only points were added to the stops overlay.
MapPoint stopPoint = (MapPoint)stopGraphic.Geometry;
// Create the stop from the graphic's geometry.
Stop routeStop = new Stop(stopPoint);
// Set the name of the stop to its position in the list.
routeStop.Name = $"{_stopsOverlay.Graphics.IndexOf(stopGraphic) + 1}";
// Add the stop to the list of stops.
routeStops.Add(routeStop);
}
// Configure the route parameters with the stops.
_routeParameters.ClearStops();
_routeParameters.SetStops(routeStops);
// Create a list to hold barriers that should be routed around.
List <PolygonBarrier> routeBarriers = new List <PolygonBarrier>();
// Create barriers from the graphics.
foreach (Graphic barrierGraphic in _barriersOverlay.Graphics)
{
// Get the polygon from the graphic.
Polygon barrierPolygon = (Polygon)barrierGraphic.Geometry;
// Create a barrier from the polygon.
PolygonBarrier routeBarrier = new PolygonBarrier(barrierPolygon);
// Add the barrier to the list of barriers.
routeBarriers.Add(routeBarrier);
}
// Configure the route parameters with the barriers.
_routeParameters.ClearPolygonBarriers();
_routeParameters.SetPolygonBarriers(routeBarriers);
// If the user allows stops to be re-ordered, the service will find the optimal order.
_routeParameters.FindBestSequence = AllowReorderStopsCheckbox.IsToggled;
// If the user has allowed re-ordering, but has a definite start point, tell the service to preserve the first stop.
_routeParameters.PreserveFirstStop = PreserveFirstStopCheckbox.IsToggled;
// If the user has allowed re-ordering, but has a definite end point, tell the service to preserve the last stop.
_routeParameters.PreserveLastStop = PreserveLastStopCheckbox.IsToggled;
// Calculate and show the route.
CalculateAndShowRoute();
}