.NET で複数のフォルダーから写真アルバムのバッチ作成を自動化する方法

string rootDir = "./albums";
string outputDir = "./output_albums";
Directory.CreateDirectory(outputDir);
var albumFolders = Directory.GetDirectories(rootDir);

using Aspose.Imaging;
using Aspose.Imaging.ImageOptions;
using Aspose.Imaging.FileFormats.Tiff.Enums;

foreach (var folder in albumFolders)
{
    string[] files = Directory.GetFiles(folder, "*.jpg"); // Or *.png, *.bmp, etc.
    if (files.Length == 0) continue; // Skip empty folders

    var images = files.Select(f => Image.Load(f)).ToList();
    var tiffOptions = new TiffOptions(TiffExpectedFormat.Default)
    {
        Compression = TiffCompressions.Lzw
    };
    string albumName = Path.GetFileName(folder);
    string albumPath = Path.Combine(outputDir, albumName + ".tiff");

    using (var album = Image.Create(tiffOptions, images[0].Width, images[0].Height, false))
    {
        var graphics = new Aspose.Imaging.Graphics(album);
        graphics.DrawImage(images[0], 0, 0, images[0].Width, images[0].Height);

        for (int i = 1; i < images.Count; i++)
        {
            album.AddPage(images[i]);
        }
        album.Save(albumPath);
    }
    images.ForEach(img => img.Dispose());
}