Opening landscape image in c#

Bitmap source = (Bitmap)Image.FromFile(path);
                
                   
                    if (Array.IndexOf(source.PropertyIdList, 274) > -1)
                    {
                        var orientation = (int)source.GetPropertyItem(274).Value[0];
                        switch (orientation)
                        {
                            case 1:
                                // No rotation required.
                                break;
                            case 2:
                                source.RotateFlip(RotateFlipType.RotateNoneFlipX);
                                break;
                            case 3:
                                source.RotateFlip(RotateFlipType.Rotate180FlipNone);
                                break;
                            case 4:
                                source.RotateFlip(RotateFlipType.Rotate180FlipX);
                                break;
                            case 5:
                                source.RotateFlip(RotateFlipType.Rotate90FlipX);
                                break;
                            case 6:
                                source.RotateFlip(RotateFlipType.Rotate90FlipNone);
                                break;
                            case 7:
                                source.RotateFlip(RotateFlipType.Rotate270FlipX);
                                break;
                            case 8:
                                source.RotateFlip(RotateFlipType.Rotate270FlipNone);
                                break;
                        }
                        // This EXIF data is now invalid and should be removed.
                        source.RemovePropertyItem(274); this.actualBitmap = _images[0];
                    }