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V24.2

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MapControl.ZoomToRegion(CoordPoint, CoordPoint, Double, Boolean) Method

Zooms the map to the specified region. Allows you to set whether the map should use a non-negative integer zoom level.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v24.2.dll

NuGet Package: DevExpress.Win.Map

#Declaration

public void ZoomToRegion(
    CoordPoint topLeft,
    CoordPoint bottomRight,
    double paddingFactor,
    bool roundZoomLevel
)

#Parameters

Name Type Description
topLeft CoordPoint

The top-left coordinate of the region.

bottomRight CoordPoint

The bottom-right coordinate of the region.

paddingFactor Double

Specifies the percentage size of the border around displayed map items .

roundZoomLevel Boolean

Specifies whether to round the zoom level value.

#Remarks

The padding factor is applied to the larger dimension of a region.

The following image shows an instance of a horizontal dimension that is larger than the vertical (“PF” means “Padding Factor” on an image).

ZoomToRegion_HorizontalPadding

Note that the padding factor is divided by two for each side of the region.

#Example

The following code zooms a map into a region. The paddingFactor parameter is set to 0.3 so that zoom region is 70% of a map surface.

using DevExpress.XtraMap;

private void OnVectorLayerDataLoaded(object sender, DataLoadedEventArgs e) {
    mapControl1.ZoomToRegion(
        topLeft: new GeoPoint(61.6, 1.9),
        bottomRight: new GeoPoint(48.1, 32.1),
        paddingFactor: 0.3,
        roundZoomLevel: true);
}
See Also