Export (0) Print
Expand All

GeoCoordinateWatcher.OnPositionChanged Method

Called when a PositionChanged event occurs.

Namespace:  System.Device.Location
Assembly:  System.Device (in System.Device.dll)

'Declaration
Protected Sub OnPositionChanged ( _
	e As GeoPositionChangedEventArgs(Of GeoCoordinate) _
)

The following program shows how to subscribe to continuous updates from PositionChanged events.


Imports System.Device.Location
Module GetLocationEvent
    Public Class CLocation
        Private WithEvents watcher As GeoCoordinateWatcher
        Public Sub GetLocationEvent()
            watcher = New System.Device.Location.GeoCoordinateWatcher()
            AddHandler watcher.PositionChanged, AddressOf watcher_PositionChanged
            Dim started As Boolean = watcher.TryStart(False, TimeSpan.FromMilliseconds(1000))

            If Not started Then
                Console.WriteLine("GeoCoordinateWatcher timed out on start.")
            End If
        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)
        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.GetLocationEvent()
        Console.WriteLine("Enter any key to quit.")
        Console.ReadLine()
    End Sub

End Module


.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

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.

Community Additions

ADD
Show:
© 2014 Microsoft