C# 从Windows Phone 7中的GeoCoordinateWatcher.StatusChanged事件返回位置数据

我正在编写一个Windows Phone应用程序，需要在其中获取用户的位置。我正试图以一种很好的方式（尽我所能）解决这个问题，使用一个单独的类，在其中查询

geocordinatewatcher

位置数据，并将该数据返回给调用方法

问题是，我不知道如何从

geocordinatewatcher

的

StatusChanged

事件将

LocationData

结构返回给调用方法。请参见代码和注释：

public struct LocationData
{
    public string latitude;
    public string longitude;
}


public class LocationService : GeoCoordinateWatcher
{
    private GeoCoordinateWatcher watcher;

    private LocationData StartLocationWatcher()
    {
        LocationData ld = new LocationData();

        // The watcher variable was previously declared as type GeoCoordinateWatcher.
        if (watcher == null)
        {
            watcher = new GeoCoordinateWatcher(GeoPositionAccuracy.High);
        }

        watcher.MovementThreshold = 20; // Use MovementThreshold to ignore noise in the signal.

        watcher.StatusChanged += (o, args) =>
            {
                switch (args.Status)
                {
                    case GeoPositionStatus.Ready:
                       // Use the Position property of the GeoCoordinateWatcher object to get the current location.
                       GeoCoordinate co = watcher.Position.Location;

                       ld.latitude = co.Latitude.ToString("0.000");
                       ld.longitude = co.Longitude.ToString("0.000");

                       //Stop the Location Service to conserve battery power.

                       watcher.Stop();
                       break;
               }
           };

        watcher.Start();
        return ld; //need to return this to the calling method, with latitude and longitude data taken from GeoCoordinateWatcher
    }
}

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我不确定这是不是你想要的

注册PositionChanged事件：

您必须添加一个事件侦听器来触发位置的获取

GeoCoordinateWatcher.PositionChanged += GeoCoordinateWatcherPositionChanged;

private void GeoCoordinateWatcherPositionChanged(object sender, GeoPositionChangedEventArgs<GeoCoordinate> e)
{
    var currentLatitude = e.Position.Location.Latitude;
    var currentLongitude = e.Position.Location.Longitude;
}

GeoCoordinateWatcher.PositionChanged+=GeoCoordinateWatcher.PositionChanged；
私有void geocordinateWatcherPositionChanged（对象发送器，地理位置更改Deventargs e）
{
var currentLatitude=e.Position.Location.Latitude；
var currentLength=e.Position.Location.Longitude；
}

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当位置更改时，on将触发。

哦，这就是收到位置时触发的事件…哈哈，谢谢。