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<T> object passed to the event handler includes the GeoPosition<T> object that contains the updated location data.
The following example shows how to handle the first PositionChanged event.
using System; using System.Device.Location; namespace LocationEvent1 { class Program { static void Main(string[] args) { GeoCoordinateWatcher watcher; watcher = new GeoCoordinateWatcher(); watcher.PositionChanged += (sender, e) => { var coordinate = e.Position.Location; Console.WriteLine("Lat: {0}, Long: {1}", coordinate.Latitude, coordinate.Longitude); // Uncomment to get only one event. // watcher.Stop(); }; // Begin listening for location updates. watcher.Start(); } } }
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.