ArcGIS Pro 2.7 API Reference Guide
ZoomToAsync(Geometry,Nullable<TimeSpan>,Boolean) Method
Example 

ArcGIS.Desktop.Mapping Namespace > MapView Class > ZoomToAsync Method : ZoomToAsync(Geometry,Nullable<TimeSpan>,Boolean) Method
The geometry defining the extent in which to zoom.
The amount of time to navigate the view to the new camera position. If null it uses the default navigation duration.
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.
Zoom the view to the extent defined by a geometry.
Syntax
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

See Also

Reference

MapView Class
MapView Members
Overload List