GeoCoordinateWatcher.PositionChanged Event

.NET Framework 4.6 and 4.5

Indicates that the latitude or longitude of the location data has changed.

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

public event EventHandler<GeoPositionChangedEventArgs<GeoCoordinate>> PositionChanged

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();
        }
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
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