MapControl.ZoomToFitLayerItems(IEnumerable<LayerBase>, Double) Method

Zooms the map to fit items contained in the specified set of LayerBase class descendant objects.

Assembly : DevExpress.XtraMap.v25.2.dll

Declaration

C#
VB.NET

csharp

public void ZoomToFitLayerItems(
    IEnumerable<LayerBase> layers,
    double paddingFactor
)

Public Sub ZoomToFitLayerItems(
    layers As IEnumerable(Of LayerBase),
    paddingFactor As Double
)

Parameters

Name	Type	Description
layers	IEnumerable<LayerBase>

A IEnumerable object, containing LayerBase class descendant objects.

| | paddingFactor | Double |

A Double value, which tunes the border size around visible map items.

Remarks

When vector items are loaded at runtime, the ZoomToFitLayerItems method should be called from LayerBase.DataLoaded event handler.

The ZoomToFitLayerItems method works as follows:

Calculates a bounding box around items.
Zooms the map to fit the box. Note that the padding factor is applied to the larger dimension of the box.

Example

The following image shows a map that is zoomed with paddingFactor equal to 0.3:

C#
VB.NET

csharp

using DevExpress.XtraMap;

private void OnVectorLayerDataLoaded(object sender, DataLoadedEventArgs e) {
    mapControl1.ZoomToFitLayerItems(new LayerBase[] { vectorLayer }, 0.3);
}

Imports DevExpress.XtraMap

Private Sub OnVectorLayerDataLoaded(ByVal sender As Object, ByVal e As DataLoadedEventArgs)
    mapControl1.ZoomToFitLayerItems(New LayerBase() {vectorLayer}, 0.3)
End Sub