ZoomTo(IEnumerable<Layer>,Boolean,Nullable<TimeSpan>,Boolean) Method

Zoom the view to the extent of one or more layers. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public bool ZoomTo( 
   IEnumerable<Layer> layers,
   bool selectedOnly,
   Nullable<TimeSpan> duration,
   bool maintainViewDirection
)

Public Overloads Function ZoomTo( _
   ByVal layers As IEnumerable(Of Layer), _
   Optional ByVal selectedOnly As Boolean, _
   Optional ByVal duration As Nullable(Of TimeSpan), _
   Optional ByVal maintainViewDirection As Boolean _
) As Boolean

Parameters

layers: An enumeration of layers containing the features in which to zoom.
selectedOnly: Indicates whether only the selected features for a layer should be used to determine the extent in which to zoom.
duration: The amount of time to navigate the view to the new camera position. If null it uses the default navigation duration.
maintainViewDirection: Indicates if the Pitch and Heading should remain the same after the navigation is completed. If false the Heading will be set to 15.0 and the Pitch will be set to -60.0. This parameter only effects 3D views.

Return Value

True if the navigation is completed, false if it was interrupted by another view navigation.

Exceptions

Exception	Description
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run.

Example

Zoom to all visible layers in the map.

public Task<bool> ZoomToAllVisibleLayersAsync()
{
  return QueuedTask.Run(() =>
  {
    //Get the active map view.
    var mapView = MapView.Active;
    if (mapView == null)
      return false;

    //Zoom to all visible layers in the map.
    var visibleLayers = mapView.Map.Layers.Where(l => l.IsVisible);
    return mapView.ZoomTo(visibleLayers);
  });
}

Requirements

Target Platforms: Windows 10, Windows 8.1

Reference

MapView Class
MapView Members
Overload List