BingItineraryItem.Distance Property

Gets the distance of the itinerary item.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v20.1.dll

Declaration

public double Distance { get; }
Public ReadOnly Property Distance As Double

Property Value

Type Description
Double

A Double value specifying the item distance.

Examples

This example demonstrates how to calculate routes to the destination point from major roads. For this do the following.

NOTE

Refer to How to: Get a Bing Maps Key if you run the application and see a window with the following error message: "The specified Bing Maps key is invalid. To create a developer account, refer to https://www.microsoft.com/en-us/maps/create-a-bing-maps-key".

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

namespace CalculateRoutesFromMajorRoads {
    public partial class Form1 : Form {
        const double minLat = -90;
        const double maxLat = 90;
        const double minLon = -180;
        const double maxLon = 180;

        const string yourBingKey = "Insert Your Bing Key Here";//"Your Bing Key";

        double lat = 40;
        double lon = -120;
        BingRouteDataProvider routeProvider;

        public Form1() {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e) {
            imageProvider.BingKey = yourBingKey;

            routeProvider = new BingRouteDataProvider { BingKey = yourBingKey };
            routeProvider.LayerItemsGenerating += OnLayerItemsGenerating;
            routeProvider.RouteCalculated += OnRouteCalculated;
            informationLayer.DataProvider = routeProvider;
            informationLayer.DataRequestCompleted += OnDataRequestCompleted;

            teLatitude.Text = lat.ToString();
            teLongitude.Text = lon.ToString();
            #region #InitBingRouteOptions
            cbeTravelMode.Properties.Items.AddRange(Enum.GetValues(typeof(BingTravelMode)));
            cbeTravelMode.SelectedIndex = 0;
            cbeRouteOptimization.Properties.Items.AddRange(Enum.GetValues(typeof(BingRouteOptimization)));
            cbeRouteOptimization.SelectedIndex = 0;
            #endregion #InitBingRouteOptions
        }

        #region #LayerItemsGenerating
        void OnLayerItemsGenerating(object sender, LayerItemsGeneratingEventArgs e) {
            foreach(MapItem item in e.Items) {
                MapPolyline polyline = item as MapPolyline;
                if(polyline != null) {
                    polyline.Stroke = Color.FromArgb(0xFF, 0x00, 0x72, 0xC6);
                    polyline.StrokeWidth = 4;
                }
            }
        }
        #endregion #LayerItemsGenerating

        #region #DataRequestCompleted
        void OnDataRequestCompleted(object sender, RequestCompletedEventArgs e) {
            mapControl.ZoomToFitLayerItems(0.4);
        }
        #endregion #DataRequestCompleted

        #region #BingRouteOptionsChanged
        private void OnTravelModeSelectedIndexChanged(object sender, EventArgs e) {
            routeProvider.RouteOptions.Mode = (BingTravelMode)cbeTravelMode.SelectedItem;
        }

        private void OnRouteOptimizationSelectedIndexChanged(object sender, EventArgs e) {
            routeProvider.RouteOptions.RouteOptimization = (BingRouteOptimization)cbeRouteOptimization.SelectedItem;
        }
        #endregion #BingRouteOptionsChanged

        void ShowErrorMessage(string variable, double minVal, double maxVal) {
            MessageBox.Show(
                        this,
                        String.Format(
                            "The {0} value shoud be larger or equals {1} and less or equals {2}.",
                            variable,
                            minVal,
                            maxVal
                        ),
                        variable
                    );
        }

        private void OnLatitudeValidating(object sender, CancelEventArgs e) {
            if(!Double.TryParse(teLatitude.Text, out lat) ||
                (lat > maxLat) || (lat < minLat)) {
                e.Cancel = true;
                ShowErrorMessage("Latitude", minLat, maxLat);
            }
        }

        private void OnLongitudeValidating(object sender, CancelEventArgs e) {
            if(!Double.TryParse(teLongitude.Text, out lon) ||
                (lon > maxLon) || (lon < minLon)) {
                e.Cancel = true;
                ShowErrorMessage("Longitude", minLon, maxLon);
            }
        }

        private void OnCalculateRoutesClick(object sender, EventArgs e) {
            RouteWaypoint targetPoint = new RouteWaypoint("Searched location", new GeoPoint(lat, lon));
            routeProvider.CalculateRoutesFromMajorRoads(targetPoint);
        }

        #region #RouteCalculated
        private void OnRouteCalculated(object sender, BingRouteCalculatedEventArgs e) {
            RouteCalculationResult result = e.CalculationResult;
            if((result.RouteResults == null) ||
                (result.ResultCode == RequestResultCode.BadRequest)) {
                rtbResults.Text = "The Bing Route service does not work for this location.";
                return;
            }

            StringBuilder resultList = new StringBuilder("");

            if(result.IntermediatePoints != null) {
                resultList.Append(String.Format("_________________________\n"));

                for(int i = 0; i < e.CalculationResult.IntermediatePoints.Count; i++)
                    resultList.Append(
                        String.Format("Starting point {0}: {1} ({2})\n",
                        i + 1,
                        e.CalculationResult.IntermediatePoints[i].Description,
                        e.CalculationResult.IntermediatePoints[i].Location)
                    );
            }

            if((result.RouteResults != null) & (result.ResultCode == RequestResultCode.Success)) {

                for(int rnum = 0; rnum < e.CalculationResult.RouteResults.Count; rnum++) {
                    resultList.Append(String.Format("_________________________\n"));
                    resultList.Append(String.Format("Path {0}:\n", rnum + 1));
                    resultList.Append(String.Format(
                        "Distance: {0}\n",
                        e.CalculationResult.RouteResults[rnum].Distance
                    ));
                    resultList.Append(String.Format(
                        "Time: {0}\n",
                        e.CalculationResult.RouteResults[0].Time
                    ));

                    if(e.CalculationResult.RouteResults[rnum].Legs != null) {
                        int legNum = 1;
                        foreach(BingRouteLeg leg in e.CalculationResult.RouteResults[rnum].Legs) {
                            resultList.Append(String.Format("\tLeg {0}:\n", legNum++));
                            resultList.Append(String.Format("\tDistance: {0}\n", leg.Distance));
                            resultList.Append(String.Format("\tTime: {0}\n", leg.Time));
                            if(leg.Itinerary != null) {
                                foreach(BingItineraryItem itineraryItem in leg.Itinerary) {
                                    resultList.Append(String.Format(itineraryItem.Maneuver + "\n"));
                                    resultList.Append(String.Format(
                                        "\t\tLocation: {0}\n",
                                        itineraryItem.Location
                                    ));
                                }
                            }
                        }
                    }
                }
            }
            rtbResults.Text = resultList.ToString();
        }
        #endregion #RouteCalculated
    }
}
See Also