我想从图像中获取有关地理位置的信息，如下图所示voidcam_Completed(objectsender,PhotoResulte){if(e.TaskResult==TaskResult.OK){ImagecameraImage=newImage();BitmapImagebImage=newBitmapImage();bImage.SetSource(e.ChosenPhoto);cameraImage.Source=bImage;e.ChosenPhoto.Position=0;ExifReaderreader=newExifReader(e.ChosenPhoto);doub