BingRouteDataProvider.RouteCalculated Event
Occurs when a route has been calculated.
Namespace: DevExpress.Xpf.Map
Assembly: DevExpress.Xpf.Map.v24.1.dll
NuGet Package: DevExpress.Wpf.Map
Declaration
Event Data
The RouteCalculated event's data class is BingRouteCalculatedEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| CalculationResult | Returns a result of a route calculation. |
| Cancelled | Gets a value indicating whether an asynchronous operation has been canceled. Inherited from AsyncCompletedEventArgs. |
| Error | Gets a value indicating which error occurred during an asynchronous operation. Inherited from AsyncCompletedEventArgs. |
| UserState | Gets the unique identifier for the asynchronous task. Inherited from AsyncCompletedEventArgs. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| RaiseExceptionIfNecessary() | Raises a user-supplied exception if an asynchronous operation failed. Inherited from AsyncCompletedEventArgs. |
Example
This example demonstrates how to calculate routes to the destination point from major roads.
Important
On May 21, 2024, Microsoft announced that Bing Maps for Enterprise and its API will be discontinued. Azure Maps will be a single unified enterprise mapping platform available from Microsoft.
We are working on API compatible with Azure Maps and expect to ship it with our next major release (v24.2).
If you have an existing license to Bing Maps for Enterprise, you can continue using our existing API. You need to transition to new API until June 30, 2025 (free and basic license) or until June 30, 2028 (enterprise license).
The last date you can get a new license to Bing Maps for Enterprise is June 30, 2025. If you do not have an existing license after that date, you would not be able to use our map controls with Bing Maps or Azure Maps (until we release the new API). During that time, you can use other map providers supported by our controls, such as OpenStreetMap.
- To calculate routes from major roads, the BingRouteDataProvider.CalculateRoutesFromMajorRoads method should be called. In this example, it is called in the Calculate Routes From Major Roads button click event handler.
- To process the request result, the
BingRouteDataProvider.RouteCalculatedevent should be handled. The requested results contain the total distance of a route, itinerary item (BingRouteResult.Distance, BingRouteLeg.Distance, BingItineraryItem.Distance), the time required to follow the calculated route (BingRouteResult.Time) and pass the route leg and itinerary item (BingRouteLeg.Time, BingItineraryItem.Time). You can also see the maneuvers associated with the itinerary item (BingItineraryItem.Maneuver) and other parameters. - To customize map items generated by the BingRouteDataProvider object (because the InformationDataProviderBase.GenerateLayerItems property value is true by default) the InformationDataProviderBase.LayerItemsGenerating event should be handled.
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“.
Imports DevExpress.Xpf.Map
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Namespace CalculateRoutesFromMajorRoads
Partial Public Class MainWindow
Inherits Window
Public location As New GeoPoint(40, -120)
Public Sub New()
InitializeComponent()
Me.DataContext = location
End Sub
#Region "#RouteCalculated"
Private Sub routeDataProvider_RouteCalculated(ByVal sender As Object, ByVal e As BingRouteCalculatedEventArgs)
Dim result As RouteCalculationResult = e.CalculationResult
Dim resultList As New StringBuilder()
resultList.Append(String.Format("Status: {0}" & ControlChars.Lf, result.ResultCode))
resultList.Append(String.Format("Fault reason: {0}" & ControlChars.Lf, result.FaultReason))
resultList.Append(ProcessIntermediatePoints(result.IntermediatePoints))
resultList.Append(ProcessRouteResults(result.RouteResults))
tbResults.Text = resultList.ToString()
End Sub
#End Region ' #RouteCalculated
#Region "#ProcessStartingPoints"
Private Function ProcessIntermediatePoints(ByVal points As List(Of RouteWaypoint)) As String
If points Is Nothing Then
Return ""
End If
Dim sb As New StringBuilder("Intermediate Points:" & ControlChars.Lf)
sb.Append(String.Format("_________________________" & ControlChars.Lf))
For i As Integer = 0 To points.Count - 1
sb.Append(String.Format("Intermediate point {0}: {1} ({2})" & ControlChars.Lf, i+1, points(i).Description, points(i).Location))
Next i
Return sb.ToString()
End Function
#End Region ' #ProcessStartingPoints
#Region "#ProcessRouteResults"
Private Function ProcessRouteResults(ByVal results As List(Of BingRouteResult)) As String
If results Is Nothing Then
Return ""
End If
Dim sb As New StringBuilder("RouteResults:" & ControlChars.Lf)
For i As Integer = 0 To results.Count - 1
sb.Append(String.Format("_________________________" & ControlChars.Lf))
sb.Append(String.Format("Path {0}:" & ControlChars.Lf, i+1))
sb.Append(String.Format("Distance: {0}" & ControlChars.Lf, results(i).Distance))
sb.Append(String.Format("Time: {0}" & ControlChars.Lf, results(i).Time))
sb.Append(ProcessLegs(results(i).Legs))
Next i
Return sb.ToString()
End Function
#End Region ' #ProcessRouteResults
#Region "#ProcessLegs"
Private Function ProcessLegs(ByVal legs As List(Of BingRouteLeg)) As String
If legs Is Nothing Then
Return ""
End If
Dim sb As New StringBuilder("Legs:" & ControlChars.Lf)
For i As Integer = 0 To legs.Count - 1
sb.Append(String.Format(ControlChars.Tab & "Leg {0}:" & ControlChars.Lf, i+1))
sb.Append(String.Format(ControlChars.Tab & "Start: {0}" & ControlChars.Lf, legs(i).StartPoint))
sb.Append(String.Format(ControlChars.Tab & "End: {0}" & ControlChars.Lf, legs(i).EndPoint))
sb.Append(String.Format(ControlChars.Tab & "Distance: {0}" & ControlChars.Lf, legs(i).Distance))
sb.Append(String.Format(ControlChars.Tab & "Time: {0}" & ControlChars.Lf, legs(i).Time))
sb.Append(ProcessItinerary(legs(i).Itinerary))
Next i
Return sb.ToString()
End Function
#End Region ' #ProcessLegs
#Region "#ProcessItinerary"
Private Function ProcessItinerary(ByVal items As List(Of BingItineraryItem)) As String
If items Is Nothing Then
Return ""
End If
Dim sb As New StringBuilder(ControlChars.Tab & "Internary Items:" & ControlChars.Lf)
For i As Integer = 0 To items.Count - 1
sb.Append(String.Format(ControlChars.Tab & ControlChars.Tab & "Itinerary {0}:" & ControlChars.Lf, i+1))
sb.Append(String.Format(ControlChars.Tab & ControlChars.Tab & "Maneuver: {0}" & ControlChars.Lf, items(i).Maneuver))
sb.Append(String.Format(ControlChars.Tab & ControlChars.Tab & "Location: {0}" & ControlChars.Lf, items(i).Location))
sb.Append(String.Format(ControlChars.Tab & ControlChars.Tab & "Instructions: {0}" & ControlChars.Lf, items(i).ManeuverInstruction))
sb.Append(ProcessWarnings(items(i).Warnings))
Next i
Return sb.ToString()
End Function
#End Region ' #ProcessItinerary
#Region "#ProcessWarnings"
Private Function ProcessWarnings(ByVal warnings As List(Of BingItineraryItemWarning)) As String
If warnings Is Nothing Then
Return ""
End If
Dim sb As New StringBuilder(ControlChars.Tab & ControlChars.Tab & "Warnings:" & ControlChars.Lf)
For i As Integer = 0 To warnings.Count - 1
sb.Append(String.Format(ControlChars.Tab & ControlChars.Tab & ControlChars.Tab & "Warning {0}:" & ControlChars.Lf, i + 1))
sb.Append(String.Format(ControlChars.Tab & ControlChars.Tab & ControlChars.Tab & "Type: {0}" & ControlChars.Lf, warnings(i).Type))
sb.Append(String.Format(ControlChars.Tab & ControlChars.Tab & ControlChars.Tab & "Text: {0}" & ControlChars.Lf, warnings(i).Text))
Next i
Return sb.ToString()
End Function
#End Region ' #ProcessWarnings
#Region "#CalculateRoutesFromMajorRoads"
Private Sub calculateRoutes_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
routeProvider.CalculateRoutesFromMajorRoads(New RouteWaypoint(tbDestination.Text, location))
End Sub
#End Region ' #CalculateRoutesFromMajorRoads
Private Sub ValidationError(ByVal sender As Object, ByVal e As ValidationErrorEventArgs)
If e.Action = ValidationErrorEventAction.Added Then
MessageBox.Show(e.Error.ErrorContent.ToString())
End If
End Sub
End Class
Friend Class RangeDoubleValidationRule
Inherits ValidationRule
Private min_Renamed As Double = Double.MinValue
Private max_Renamed As Double = Double.MaxValue
Public Property Min() As Double
Get
Return min_Renamed
End Get
Set(ByVal value As Double)
If (value <> min_Renamed) AndAlso (value <=max_Renamed) Then
min_Renamed = value
End If
End Set
End Property
Public Property Max() As Double
Get
Return max_Renamed
End Get
Set(ByVal value As Double)
If (value <> max_Renamed) AndAlso (value >= min_Renamed) Then
max_Renamed = value
End If
End Set
End Property
Public Overrides Function Validate(ByVal value As Object, ByVal cultureInfo As System.Globalization.CultureInfo) As ValidationResult
Dim d As Double = Nothing
If Not Double.TryParse(TryCast(value, String), d) Then
Return New ValidationResult(False, "Input value should be floating point number.")
End If
If (d < min_Renamed) OrElse (d > max_Renamed) Then
Return New ValidationResult(False, String.Format("Input value should be larger than or equals to {0} and less than or equals to {1}", min_Renamed, max_Renamed))
End If
Return New ValidationResult(True, Nothing)
End Function
End Class
End Namespace
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the RouteCalculated event.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.