InformationLayer Class
A layer that is used to display additional information above the map.
Namespace: DevExpress.Xpf.Map
Assembly: DevExpress.Xpf.Map.v25.1.dll
NuGet Package: DevExpress.Wpf.Map
Declaration
Remarks
The information layer allows you to place GIS elements (e.g., a search panel) above a map.
GIS elements can be connected to the data provider by assigning the InformationLayer.DataProvider property to the corresponding data provider type. After that, you can send and display the information requests from this provider on a GIS element.
For more information on information layer, see the Layers topic.
Example
This example demonstrates how to allow users to search for a specific place on a map using the Search panel.
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.
To obtain and display map data from Azure Maps, we implemented the following providers:
- AzureMapDataProvider
- AzureSearchDataProvider
- AzureRouteDataProvider
- AzureGeocodeDataProvider
- AzureTrafficIncidentDataProvider
- AzureRouteIsochroneDataProvider
For information on how to migrate your app from Bing Maps to Azure Maps, see the following help topic: DevExpress Map Control for WPF: Migrate from Bing Maps to Azure Maps.
If you already have a Bing Maps for Enterprise license, you can keep using the current API. You must transition to the new API by June 30, 2025 (for free/basic licenses) or June 30, 2028 (for enterprise licenses). New licenses will no longer be available after June 30, 2025. Bing Maps will not work with our map controls without a license after that date.
To enable searching in the map control, do the following.
- Create an
InformationLayerand add it to the MapControl.Layers collection. - Create an instance of the
BingSearchDataProviderand assign it to the InformationLayer.DataProvider property. - Specify the Bing Maps key using the BingMapDataProviderBase.BingKey property.
The Search panel appears automatically (since the MapControl.ShowSearchPanel property value is true by default).
<dxm:InformationLayer.DataProvider>
<dxm:BingSearchDataProvider BingKey="{Binding Source={StaticResource YourBingKey}}">
<dxm:BingSearchDataProvider.SearchOptions>
<dxm:BingSearchOptions ResultsCount="5" />
</dxm:BingSearchDataProvider.SearchOptions>
</dxm:BingSearchDataProvider>
</dxm:InformationLayer.DataProvider>
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the InformationLayer class.
Note
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