BingGeocodeDataProvider.LocationInformationReceived Event

Occurs when information about the location has been received.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v24.2.dll

NuGet Package: DevExpress.Wpf.Map

Declaration

C#

public event LocationInformationReceivedEventHandler LocationInformationReceived

VB.NET

Public Event LocationInformationReceived As LocationInformationReceivedEventHandler

Event Data

The LocationInformationReceived event's data class is LocationInformationReceivedEventArgs. The following properties provide information specific to this event:

Property	Description
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.
Result	Returns the result of a request to obtain information about a specific geographical coordinate.
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 manually process received Bing Geocode location information.

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.

• Create a InformationLayer object and add it to the MapControl.Layers collection. Assign the BingGeocodeDataProvider object to the InformationLayer.DataProvider property.
• Handle the BingGeocodeDataProvider.LocationInformationReceived event. In the event handler, implement the request result processing.

Note

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”, refer to the following tutorial: How to: Get a Bing Maps Key.

MainWindow.xaml

<dxm:BingGeocodeDataProvider x:Name="geocodeProvider"   ProcessMouseEvents="False"
    BingKey="{Binding Source={StaticResource YourBingKey}}" 
    LocationInformationReceived="geocodeProvider_LocationInformationReceived"/>

MainWindow.xaml.cs

private void geocodeProvider_LocationInformationReceived(object sender, LocationInformationReceivedEventArgs e) {
    GeocodeRequestResult result = e.Result;
    StringBuilder resultList = new StringBuilder("");
    resultList.Append(String.Format("Status: {0}\n", result.ResultCode));
    resultList.Append(String.Format("Fault reason: {0}\n", result.FaultReason));
    resultList.Append(String.Format("______________________________\n"));

    if (result.ResultCode != RequestResultCode.Success) {
        tbResults.Text = resultList.ToString();
        return; 
    }

    int resCounter = 1;
    foreach (LocationInformation locations in result.Locations) {
        resultList.Append(String.Format("Request Result {0}:\n", resCounter));
        resultList.Append(String.Format("Display Name: {0}\n", locations.DisplayName));
        resultList.Append(String.Format("Entity Type: {0}\n", locations.EntityType));
        resultList.Append(String.Format("Address: {0}\n", locations.Address));
        resultList.Append(String.Format("Location: {0}\n", locations.Location));
        resultList.Append(String.Format("______________________________\n"));
        resCounter++;
    }

    tbResults.Text = resultList.ToString();
}

MainWindow.xaml.vb

Private Sub geocodeProvider_LocationInformationReceived(ByVal sender As Object, ByVal e As LocationInformationReceivedEventArgs)
    Dim result As GeocodeRequestResult = e.Result
    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(String.Format("______________________________" & ControlChars.Lf))

    If result.ResultCode <> RequestResultCode.Success Then
        tbResults.Text = resultList.ToString()
        Return
    End If

    Dim resCounter As Integer = 1
    For Each locations As LocationInformation In result.Locations
        resultList.Append(String.Format("Request Result {0}:" & ControlChars.Lf, resCounter))
        resultList.Append(String.Format("Display Name: {0}" & ControlChars.Lf, locations.DisplayName))
        resultList.Append(String.Format("Entity Type: {0}" & ControlChars.Lf, locations.EntityType))
        resultList.Append(String.Format("Address: {0}" & ControlChars.Lf, locations.Address))
        resultList.Append(String.Format("Location: {0}" & ControlChars.Lf, locations.Location))
        resultList.Append(String.Format("______________________________" & ControlChars.Lf))
        resCounter += 1
    Next locations

    tbResults.Text = resultList.ToString()
End Sub