GeoCoordinateWatcher.PositionChanged Event
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
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.