MapControl.ZoomToFit(IEnumerable<MapItem>, Double) Method

Zooms a map to fit the area containing items sent as a parameter.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v18.2.dll

Declaration

C#

public void ZoomToFit(
    IEnumerable<MapItem> items,
    double paddingFactor = 0.15000000596046448
)

VB.NET

Public Sub ZoomToFit(
    items As IEnumerable(Of MapItem),
    paddingFactor As Double = 0.15000000596046448
)

Parameters

Name	Type	Description
items	IEnumerable<MapItem>	A set of MapItem descendant objects that should be visible on a map after zooming.

Optional Parameters

Name	Type	Default	Description
paddingFactor	Double	0.150000005960464	A Double object, which tunes the border size around visible map items.

Remarks

This method works as follows.

• Calculates a bounding box around map items.

  

• Zooms the map to fit the box. Note that the padding factor is applied to the larger dimension of the box.

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

  

  When the horizontal dimension is larger than the vertical, the zoom appears as follows.

  

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

In the instance of the following code

C#

map.ZoomToFit(storage.Items, 0.3);

VB.NET

map.ZoomToFit(storage.Items, 0.3)

the result should look like the following.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ZoomToFit(IEnumerable<MapItem>, Double) method.

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.

VB.NET

how-to-programmatically-search-using-the-bing-map-search-service-e4238/VB/DXMapExample/MainWindow.xaml.vb#L45

Private Sub OnLayerItemsGenerating(ByVal sender As Object, ByVal args As LayerItemsGeneratingEventArgs)
    mapControl.ZoomToFit(args.Items, 0.4)
End Sub