AcManager.Controls.Dialogs.ImageViewer.ViewModel.UpdateCurrent C# (CSharp) Метод

            private async void UpdateCurrent() {
                var position = _currentPosition;
                var path = _images[position] as string;
                if (path != null) {
                    _images[position] = BetterImage.LoadBitmapSource(path, double.IsPositiveInfinity(MaxImageWidth) ? -1 : (int)MaxImageWidth);
                }

                if (position < _images.Length - 1) {
                    var next = position + 1;
                    var nextPath = _images[next] as string;
                    if (nextPath != null) {
                        var loaded = await BetterImage.LoadBitmapSourceAsync(nextPath, double.IsPositiveInfinity(MaxImageWidth) ? -1 : (int)MaxImageWidth);
                        var updated = _images[next];
                        if (updated as string != nextPath) return;
                        _images[next] = loaded;
                    }
                }

                if (position > 1) {
                    var next = position - 1;
                    var nextPath = _images[next] as string;
                    if (nextPath != null) {
                        var loaded = await BetterImage.LoadBitmapSourceAsync(nextPath, double.IsPositiveInfinity(MaxImageWidth) ? -1 : (int)MaxImageWidth);
                        var updated = _images[next];
                        if (updated as string != nextPath) return;
                        _images[next] = loaded;
                    }
                }

                for (var i = 0; i < position - 2; i++) {
                    _images[i] = _originalImages[i];
                }

                for (var i = position + 3; i < _images.Length; i++) {
                    _images[i] = _originalImages[i];
                }
            }