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BingRouteCalculatedEventHandler Delegate

A method that will handle the BingRouteDataProvider.RouteCalculated event.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v21.2.dll


public delegate void BingRouteCalculatedEventHandler(
    object sender,
    BingRouteCalculatedEventArgs e


Name Type Description
sender Object

The event source.

e BingRouteCalculatedEventArgs

A BingRouteCalculatedEventArgs object that contains event data.


When creating a BingRouteCalculatedEventHandler delegate, you identify the method that will handle the corresponding event. To associate an event with your event handler, add a delegate instance to this event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see Events and Delegates in MSDN.


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


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“.

View Example

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()
            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))

            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))
            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))
            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))
            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
            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
                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
                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
See Also