get map coordinates using MapControl from DevExpress WMS, WPF C #

        <dxm:ImageLayer>
            <dxm:WmsDataProvider  ServerUri="http://10.9.12.159:8080/geoserver/wms" ActiveLayerName="{Binding SelectionBoxItem, ElementName=comboBox}"/>
        </dxm:ImageLayer>
        <dxm:InformationLayer>
            <dxm:BingGeocodeDataProvider x:Name="geocodeProvider" />
        </dxm:InformationLayer>

    </dxm:MapControl>