public static BitmapImage _ToBitmapImage(this Bitmap bitmap)
{
    var _MemoryStream = new MemoryStream();
    bitmap.Save(_MemoryStream, ImageFormat.Png);
 
    var _BitmapImage = new BitmapImage();
    _BitmapImage.BeginInit();
    _BitmapImage.StreamSource = _MemoryStream;
    _BitmapImage.EndInit();