InformationLayer Class
A layer that is used to display additional information above the map.
Namespace: DevExpress.Xpf.Map
Assembly: DevExpress.Xpf.Map.v18.2.dll
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.
To enable searching in the map control, do the following.
- Create an
InformationLayer
and add it to the MapControl.Layers collection. - Create an instance of the BingSearchDataProvider and assign it to the InformationLayer.DataProvider property.
- Specify the Bing Maps key using the BingMapDataProviderBase.BingKey property.
The Search panel appears automatically (since the BingSearchDataProvider.ShowSearchPanel property value is true by default).
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.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-connect-a-map-control-to-a-bing-search-web-service-e4146.
<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 snippets (auto-collected from DevExpress Examples) contain references to the InformationLayer class.
Note
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