InformationLayer Class
A layer that is used to display additional information above the map.
Namespace: DevExpress.Xpf.Map
Assembly: DevExpress.Xpf.Map.v24.1.dll
NuGet Package: DevExpress.Wpf.Map
#Declaration
public class InformationLayer :
VectorLayerBase
#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.
We are working on API compatible with Azure Maps and expect to ship it with our next major release (v24.
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 Open
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.
<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
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.