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我正在开发Windows Phone中的Silverlight 8.1中,我想设置使用this链接代码当前位置和硬编码的目的地之间的路径的应用程序:的InnerException = {“异常来自HRESULT:0x8004231C”}
private async void GetCoordinates()
{
Geolocator myGeolocator = new Geolocator();
myGeolocator.DesiredAccuracyInMeters = 50;
Geoposition myposition = null;
try
{
myposition = await myGeolocator.GetGeopositionAsync(TimeSpan.FromMinutes(1),TimeSpan.FromSeconds(50));
Geocoordinate myGeocoordinate = myposition.Coordinate;
GeoCoordinate myGeoCoordinate = CoordinateConverter.ConvertGeocoordinate(myGeocoordinate);
mycoordinates.Add(new GeoCoordinate(myGeoCoordinate.Latitude, myGeoCoordinate.Longitude));
locationmap.Center = myGeoCoordinate;
locationmap.ZoomLevel = 13;
Mygeocodequery = new GeocodeQuery();
Mygeocodequery.SearchTerm = "Seattle, WA";
Mygeocodequery.GeoCoordinate = new GeoCoordinate(myGeoCoordinate.Latitude, myGeoCoordinate.Longitude);
Mygeocodequery.QueryCompleted += Mygeocodequery_Querycompleted;
Mygeocodequery.QueryAsync();
}
catch (UnauthorizedAccessException)
{
MessageBox.Show("Location is disabled in phone settings or capabilities are not checked.");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Mygeocodequery_Querycompleted(object sender, QueryCompletedEventArgs<IList<MapLocation>> e)
{
if(e.Error==null)
{
MyQuery = new RouteQuery();
mycoordinates.Add(e.Result[0].GeoCoordinate);
MyQuery.Waypoints = mycoordinates;
MyQuery.QueryCompleted += MyQuery_QueryCompleted;
MyQuery.QueryAsync();
Mygeocodequery.Dispose();
}
}
private void MyQuery_QueryCompleted(object sender, QueryCompletedEventArgs<Route> e)
{
try
{
**Route MyRoute = e.Result;**
MapRoute MyMapRoute = new MapRoute(MyRoute);
locationmap.AddRoute(MyMapRoute);
MyQuery.Dispose();
}
catch (TargetInvocationException ex)
{
MessageBox.Show(ex.InnerException.Message);
}
}
有时候工作正常,但有时我得到这个内部异常如TargetInvocationException Exception from HRESULT: 0x8004231C
上线高亮请让我知道我应该怎么办?