BingRouteIsochroneDataProvider Class

Allows you to use the Bing Maps service to calculate an isochrone and display it on the map. An isochrone shows an area reachable from a specific location.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v23.1.dll

NuGet Package: DevExpress.Win.Map

Declaration

C#

public class BingRouteIsochroneDataProvider :
    BingMapDataProviderBase

VB.NET

Public Class BingRouteIsochroneDataProvider
    Inherits BingMapDataProviderBase

Remarks

Follow the steps below to calculate a route isochrone:

• Create an InformationLayer object and add it to the MapControl.Layers collection.

• Initialize the layer’s InformationLayer.DataProvider property with a BingRouteIsochroneDataProvider object.

• Specify the provider’s BingKey property.

• Call one of the following methods to calculate an isochrone:

  • CalculateIsochroneByDistance
  • CalculateIsochroneByTime
  • CalculateIsochroneByTimeWithTraffic

• Use the IsochroneOptions property to define parameters that are applied when the isochrone is calculated (for example, travel mode, distance measurement unit, and time measurement unit).

You can also handle the IsochroneCalculated event to customize the appearance of the polygon that the BingRouteIsochroneDataProvider generates.

Example

The following code plots a polygon that shows an area accessible from the specified point:

C#

using DevExpress.XtraMap;
using System;
using System.Drawing;
using System.Windows.Forms;

    private void Form1_Load(object sender, EventArgs e) {
        ImageLayer imageLayer = new ImageLayer();
        mapControl1.Layers.Add(imageLayer);
        BingMapDataProvider provider = new BingMapDataProvider();
        provider.BingKey = "Insert your Bing key.";
        provider.Kind = BingMapKind.RoadLight;
        imageLayer.DataProvider = provider;       

        InformationLayer infoLayer = new InformationLayer();
        mapControl1.Layers.Add(infoLayer);

        BingRouteIsochroneDataProvider isochroneDataProvider = new BingRouteIsochroneDataProvider();
        isochroneDataProvider.BingKey = "Insert your Bing Maps key.";
        GeoPoint origin = new GeoPoint(36.1532403246368, -86.7701703811725);
        mapControl1.CenterPoint = origin;
        isochroneDataProvider.CalculateIsochroneByDistance(new RouteWaypoint("", origin), 10);
        isochroneDataProvider.GenerateLayerItems = false;
        isochroneDataProvider.IsochroneCalculated += IsochroneCalculated;
        infoLayer.DataProvider = isochroneDataProvider;

    }

    private void IsochroneCalculated(object sender, BingRouteIsochroneCalculatedEventArgs e) {
        foreach (var polygon in e.CalculationResult.IsochroneResult.Polygons) {
            MapPolyline item = new MapPolyline();
            foreach (var points in polygon.Coordinates)
                item.Points.Add(points);
            item.StrokeWidth = 4;
            item.Stroke = Color.Red;

            VectorItemsLayer vectorLayer = new VectorItemsLayer();
            mapControl1.Layers.Add(vectorLayer);
            MapItemStorage storage = new MapItemStorage();
            vectorLayer.Data = storage;
            storage.Items.Add(item);
        }
        mapControl1.ZoomToFitLayerItems();
    }

VB.NET

Imports DevExpress.XtraMap
Imports System.Windows.Forms

  Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
      Dim imageLayer As ImageLayer = New ImageLayer()
      mapControl1.Layers.Add(imageLayer)
      Dim provider As BingMapDataProvider = New BingMapDataProvider()
      provider.BingKey = "Insert your Bing key."
      provider.Kind = BingMapKind.RoadLight
      imageLayer.DataProvider = provider

      Dim infoLayer As InformationLayer = New InformationLayer()
      mapControl1.Layers.Add(infoLayer)
      Dim isochroneDataProvider As BingRouteIsochroneDataProvider = New BingRouteIsochroneDataProvider()
      isochroneDataProvider.BingKey = "Insert your Bing Maps key."
      Dim origin As GeoPoint = New GeoPoint(36.1532403246368, -86.7701703811725)
      mapControl1.CenterPoint = origin
      isochroneDataProvider.CalculateIsochroneByDistance(New RouteWaypoint("", origin), 10)
      isochroneDataProvider.GenerateLayerItems = False
      isochroneDataProvider.IsochroneCalculated += AddressOf IsochroneCalculated
      infoLayer.DataProvider = isochroneDataProvider

  Private Sub IsochroneCalculated(ByVal sender As Object, ByVal e As BingRouteIsochroneCalculatedEventArgs)
      For Each polygon In e.CalculationResult.IsochroneResult.Polygons
          Dim item As MapPolyline = New MapPolyline()

          For Each points In polygon.Coordinates
              item.Points.Add(points)
          Next

          item.StrokeWidth = 4
          item.Stroke = Color.Red
          Dim vectorLayer As VectorItemsLayer = New VectorItemsLayer()
          mapControl1.Layers.Add(vectorLayer)
          Dim storage As MapItemStorage = New MapItemStorage()
          vectorLayer.Data = storage
          storage.Items.Add(item)
      Next

      mapControl1.ZoomToFitLayerItems()
  End Sub

Implements

ISupportWebRequest

Inheritance

Object

InformationDataProviderBase

WebInformationDataProvider

BingMapDataProviderBase

BingRouteIsochroneDataProvider