SnapshotChangedEvent Class

In This Topic

Occurs when a new feed comes in from a device location source such as a GPS/GNSS device.

Object Model

Syntax

C#
Visual Basic (Declaration)

public sealed class SnapshotChangedEvent : ArcGIS.Core.Events.CompositePresentationEvent<SnapshotChangedEventArgs>

Public NotInheritable Class SnapshotChangedEvent 
   Inherits ArcGIS.Core.Events.CompositePresentationEvent(Of SnapshotChangedEventArgs)

Example

Subscribe to Location Snapshot event

private void SubscribeToSnapshotEvents()
{
  SnapshotChangedEvent.Subscribe(OnSnapshotChanged);
}
private void OnSnapshotChanged(SnapshotChangedEventArgs args)
{
  if (args == null)
    return;

  var snapshot = args.Snapshot as NMEASnapshot;
  if (snapshot == null)
    return;

  QueuedTask.Run(() =>
  {
    var pt = snapshot.GetPositionAsMapPoint();
    if (pt?.IsEmpty ?? true)
      return;

    // access properties
    var alt = snapshot.Altitude;
    var dt = snapshot.DateTime;
    var vdop = snapshot.VDOP;
    var hdop = snapshot.HDOP;
    // etc

    //TODO: use the snapshot
  });
}

Inheritance Hierarchy

System.Object
   ArcGIS.Core.Events.EventBase
      ArcGIS.Core.Events.CompositePresentationEvent<TPayload>
         ArcGIS.Desktop.Core.DeviceLocation.Events.SnapshotChangedEvent

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

SnapshotChangedEvent Members
ArcGIS.Desktop.Core.DeviceLocation.Events Namespace

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