GeoCoordinateWatcher.PositionChanged イベント

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)) 

イベントの種類

実装

例

次の例は、最初 PositionChanged のイベントを処理する方法を示しています。

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

注釈

このイベントは、最後のイベントが で MovementThreshold指定されたしきい値を超えた後に移動する距離が発生した場合にのみ発生します。

GeoPositionChangedEventArgs<T>イベント ハンドラーに渡されるオブジェクトには、更新されたGeoPosition<T>場所データを含む オブジェクトが含まれます。

適用対象

こちらもご覧ください

• MovementThreshold