BingRouteCalculatedEventHandler Delegate
A method that will handle the BingRouteDataProvider.RouteCalculated event.
Namespace: DevExpress.Xpf.Map
Assembly: DevExpress.Xpf.Map.v23.2.dll
NuGet Package: DevExpress.Wpf.Map
Declaration
public delegate void BingRouteCalculatedEventHandler(
object sender,
BingRouteCalculatedEventArgs e
);Parameters
| Name | Type | Description |
|---|---|---|
| sender | Object | The event source. |
| e | BingRouteCalculatedEventArgs | A BingRouteCalculatedEventArgs object that contains event data. |
Remarks
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.
Example
This example demonstrates how to calculate routes to the destination point from major roads. To accomplish this, do the following.
- 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.RouteCalculated event 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
See Also