GeoCoordinateWatcher.PositionChanged 이벤트

public:
 event EventHandler<System::Device::Location::GeoPositionChangedEventArgs<System::Device::Location::GeoCoordinate ^> ^> ^ PositionChanged;

public event EventHandler<System.Device.Location.GeoPositionChangedEventArgs<System.Device.Location.GeoCoordinate>> PositionChanged;

member this.PositionChanged : EventHandler<System.Device.Location.GeoPositionChangedEventArgs<System.Device.Location.GeoCoordinate>> 

Public Custom Event PositionChanged As EventHandler(Of GeoPositionChangedEventArgs(Of GeoCoordinate)) 

Public Event PositionChanged As EventHandler(Of GeoPositionChangedEventArgs(Of GeoCoordinate)) 

이벤트 유형

구현

예제

다음 예제에서는 첫 번째 PositionChanged 이벤트를 처리하는 방법을 보여줍니다.

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();
        }
    }
}

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

설명

이 이벤트는 마지막 이벤트 이후의 거리가 지정된 임계값 MovementThreshold을 초과하는 경우에만 발생합니다.

이벤트 처리기에 전달된 개체에는 GeoPositionChangedEventArgs<T> 업데이트된 위치 데이터가 포함된 개체가 포함 GeoPosition<T> 됩니다.

추가 정보

• MovementThreshold