ZoomToAsync(Geometry,Nullable<TimeSpan>,Boolean) Method

Zoom the view to the extent defined by a geometry.

Syntax

C#
Visual Basic (Declaration)

public Task<bool> ZoomToAsync( 
   Geometry geometry,
   Nullable<TimeSpan> duration,
   bool maintainViewDirection
)

Public Overloads Function ZoomToAsync( _
   ByVal geometry As Geometry, _
   Optional ByVal duration As Nullable(Of TimeSpan), _
   Optional ByVal maintainViewDirection As Boolean _
) As Task(Of Boolean)

Parameters

geometry: The geometry defining 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.

Remarks

This is equivalent to setting the extent of the view. Use this method in combination with the Extent property to get and then modify the view's extent. If the geometry's spatial reference is in a different spatial reference than the map this method projects the geometry into the spatial reference of the map.

Example

Zoom the active map view to an extent.

public async Task<bool> ZoomToExtentAsync(double xMin, double yMin, double xMax, double yMax, ArcGIS.Core.Geometry.SpatialReference spatialReference)
{
  //Get the active map view.
  var mapView = MapView.Active;
  if (mapView == null)
    return false;

  //Create the envelope
  var envelope = await QueuedTask.Run(() => ArcGIS.Core.Geometry.EnvelopeBuilder.CreateEnvelope(xMin, yMin, xMax, yMax, spatialReference));

  //Zoom the view to a given extent.
  return await mapView.ZoomToAsync(envelope, TimeSpan.FromSeconds(2));
}

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

Reference

MapView Class
MapView Members
Overload List