PreviousCameraAsync Method

In This Topic

Go to the previous camera position.

Syntax

C#
Visual Basic (Declaration)

public Task<bool> PreviousCameraAsync( 
   Nullable<TimeSpan> duration
)

Public Function PreviousCameraAsync( _
   Optional ByVal duration As Nullable(Of TimeSpan) _
) As Task(Of Boolean)

Parameters

duration: The amount of time to navigate the view to the new camera position. If null it uses the default navigation duration.

Return Value

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

Remarks

This method can be called multiple times in a loop to go through multiple camera positions. Use together with the HasPreviousCamera to test if there are previous cameras on the stack.

Example

Go To Previous Camera

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

  //Zoom to the selected layers in the TOC
  if (mapView.HasPreviousCamera())
    return mapView.PreviousCameraAsync();

  return Task.FromResult(false);
}

Go To Previous Camera

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

  //Zoom to the selected layers in the TOC
  if (mapView.HasPreviousCamera())
    return mapView.PreviousCameraAsync();

  return Task.FromResult(false);
}

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

MapView Class
MapView Members

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