BingRouteOptions.OptimizeWaypoints Property

Specifies whether the service rearranges route waypoints to reduce route cost.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v23.2.dll

NuGet Package: DevExpress.Wpf.Map

Declaration

C#

public bool OptimizeWaypoints { get; set; }

VB.NET

Public Property OptimizeWaypoints As Boolean

Property Value

Type	Description
Boolean	true if waypoints are rearranged; otherwise, false. The default value is false.

Property Paths

You can access this nested property as listed below:

Object Type	Path to OptimizeWaypoints
BingRouteDataProvider	.RouteOptions .OptimizeWaypoints

Remarks

Enable the OptimizeWaypoints property to rearrange waypoints passed to the BingRouteDataProvider.CalculateRoute method to create an optimized route.

The following images depict non-optimized and optimized routes for six waypoints (“San Francisco”, “Las Vegas”, “San Jose”, “Chico”, “Los Angeles”, “Oakland”):

OptimizeWaypoints = false

OptimizeWaypoints = true

The OptimizeWaypoints option is available only for Driving mode (Mode is set to Driving). The list of waypoints should include more than 2 points.

Use the BingRouteResult.WaypointsOrder property to obtain optimized waypoint indexes. Note that the first and last waypoint positions do not change when waypoints are optimized.

You can also use the RouteOptimization property to optimize the route in addition to waypoints.

Example

The following code creates an optimized route for a list of waypoints:

XAML

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:RouteOptimization"
        xmlns:dxm="http://schemas.devexpress.com/winfx/2008/xaml/map" x:Class="RouteOptimization.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Loaded="OnLoaded">
    <Grid>
        <dxm:MapControl x:Name="mapControl">
            <dxm:ImageLayer>
                <dxm:BingMapDataProvider BingKey="Insert your Bing key." 
                                         Kind="RoadLight" />
            </dxm:ImageLayer>
            <dxm:InformationLayer x:Name="infoLayer" DataRequestCompleted="OnDataRequestCompleted">
                <dxm:BingRouteDataProvider x:Name="routeProvider" 
                                           BingKey="Insert your Bing key."  
                                           LayerItemsGenerating="OnLayerItemsGenerating">
                    <dxm:BingRouteDataProvider.RouteOptions>
                        <dxm:BingRouteOptions Mode="Driving" 
                                              OptimizeWaypoints="False"/>
                    </dxm:BingRouteDataProvider.RouteOptions>
                </dxm:BingRouteDataProvider>
            </dxm:InformationLayer>
        </dxm:MapControl>
    </Grid>
</Window>

C#

using DevExpress.Xpf.Map;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Media;

namespace RouteOptimization {
    public partial class MainWindow : Window {
        private void OnLoaded(object sender, RoutedEventArgs e) {
            List<RouteWaypoint> waypoints = new List<RouteWaypoint>() {
                new RouteWaypoint("San Francisco", new GeoPoint( 37.4639, -122.2459)),
                new RouteWaypoint("Las Vegas", new GeoPoint( 36.1030, -115.0811)),
                new RouteWaypoint("San Jose", new GeoPoint( 37.20, -121.54)),
                new RouteWaypoint("Chico", new GeoPoint(39.4424, -121.508)),
                new RouteWaypoint("Los Angeles", new GeoPoint( 34.03, -118.15)),
                new RouteWaypoint("Oakland", new GeoPoint( 37.4816, -122.1615))
            };
            routeProvider.CalculateRoute(waypoints);
        }
        private void OnLayerItemsGenerating(object sender, LayerItemsGeneratingEventArgs args) {
            foreach (MapItem item in args.Items) {
                MapPolyline polyline = item as MapPolyline;
                if (polyline != null) {
                    polyline.Stroke = new SolidColorBrush(Color.FromArgb(0xFF, 0x00, 0x72, 0xC6));
                    polyline.StrokeStyle = new StrokeStyle { Thickness = 2 };
                }
            }
        }
        private void OnDataRequestCompleted(object sender, RequestCompletedEventArgs e) {
            // Call the ZoomToFitLayerItems method to zoom the map so that it displays the whole generated route.
            mapControl.ZoomToFitLayerItems();
        }
    }
}

VB.NET

Imports DevExpress.Xpf.Map
Imports System.Collections.Generic
Imports System.Windows.Media

Namespace RouteOptimization
    Public Partial Class MainWindow
        Inherits Window

        Private Sub OnLoaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
            Dim waypoints As List(Of RouteWaypoint) = New List(Of RouteWaypoint)() From {
                New RouteWaypoint("San Francisco", New GeoPoint(37.4639, -122.2459)),
                New RouteWaypoint("Las Vegas", New GeoPoint(36.1030, -115.0811)),
                New RouteWaypoint("San Jose", New GeoPoint(37.20, -121.54)),
                New RouteWaypoint("Chico", New GeoPoint(39.4424, -121.508)),
                New RouteWaypoint("Los Angeles", New GeoPoint(34.03, -118.15)),
                New RouteWaypoint("Oakland", New GeoPoint(37.4816, -122.1615))
            }
            routeProvider.CalculateRoute(waypoints)
        End Sub

        Private Sub OnLayerItemsGenerating(ByVal sender As Object, ByVal args As LayerItemsGeneratingEventArgs)
            For Each item As MapItem In args.Items
                Dim polyline As MapPolyline = TryCast(item, MapPolyline)

                If polyline IsNot Nothing Then
                    polyline.Stroke = New SolidColorBrush(Color.FromArgb(&HFF, &H00, &H72, &HC6))
                    polyline.StrokeStyle = New StrokeStyle With {
                        .Thickness = 2
                    }
                End If
            Next
        End Sub

        Private Sub OnDataRequestCompleted(ByVal sender As Object, ByVal e As RequestCompletedEventArgs)
            ' Call the ZoomToFitLayerItems method to zoom the map so that it displays the whole generated route.
            mapControl.ZoomToFitLayerItems()
        End Sub
    End Class
End Namespace