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GeoCoordinateWatcher.PositionChanged Event
.NET Framework (current version)
Indicates that the latitude or longitude of the location data has changed.
Assembly: System.Device (in System.Device.dll)
This event is only raised when the distance moved since the last event exceeds the threshold that is specified by MovementThreshold.
The GeoPositionChangedEventArgs(Of T) object passed to the event handler includes the GeoPosition(Of T) object that contains the updated location data.
The following example shows how to handle the first PositionChanged event.
Imports System.Device.Location Module GetLocationEvent Public Class CLocation Private WithEvents watcher As GeoCoordinateWatcher Public Sub GetLocationDataEvent() watcher = New System.Device.Location.GeoCoordinateWatcher() AddHandler watcher.PositionChanged, AddressOf watcher_PositionChanged watcher.Start() End Sub Private Sub watcher_PositionChanged(ByVal sender As Object, ByVal e As GeoPositionChangedEventArgs(Of GeoCoordinate)) PrintPosition(e.Position.Location.Latitude, e.Position.Location.Longitude) ' Uncomment the following to stop receiving updates after the first one. ' watcher.Stop() End Sub Private Sub PrintPosition(ByVal Latitude As Double, ByVal Longitude As Double) Console.WriteLine("Latitude: {0}, Longitude {1}", Latitude, Longitude) End Sub End Class Public Sub Main() Dim myLocation As New CLocation() myLocation.GetLocationDataEvent() Console.WriteLine("Enter any key to quit.") Console.ReadLine() End Sub End Module
.NET Framework
Available since 4.0
Windows Phone Silverlight
Available since 7.0
Available since 4.0
Windows Phone Silverlight
Available since 7.0
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