在.NET 中将位图转换为一个多页TIFF图像

using System.Drawing;
using System.IO;

public static void ConvertBitmapToMultipageTiff(string inputBitmapPath, string outputTiffPath)
{
    // 加载位图
    Bitmap bitmap = new Bitmap(inputBitmapPath);

    // 创建一个空的多页TIFF图像
    ImageCodecInfo tiffCodec = ImageCodecInfo.GetImageEncoders().First(codec => codec.MimeType == "image/tiff");
    EncoderParameters encoderParams = new EncoderParameters(1);
    encoderParams.Param[0] = new EncoderParameter(Encoder.SaveFlag, (int)EncoderValue.MultiFrame);

    using (EncoderParameters encoderParamsSave = new EncoderParameters(1))
    {
        encoderParamsSave.Param[0] = new EncoderParameter(Encoder.SaveFlag, (int)EncoderValue.Flush);

        using (Bitmap blankBitmap = new Bitmap(bitmap.Width, bitmap.Height))
        {
            using (MemoryStream ms = new MemoryStream())
            {
                blankBitmap.Save(ms, tiffCodec, encoderParams);

                // 将位图添加到多页TIFF图像中
                for (int i = 0; i< bitmap.Height; i += 100)
                {
                    using (Bitmap croppedBitmap = bitmap.Clone(new Rectangle(0, i, bitmap.Width, Math.Min(100, bitmap.Height - i)), bitmap.PixelFormat))
                    {
                        ms.Seek(0, SeekOrigin.Begin);
                        croppedBitmap.SaveAdd(ms, tiffCodec, encoderParams);
                    }
                }

                // 保存多页TIFF图像
                ms.Seek(0, SeekOrigin.Begin);
                blankBitmap.SaveAdd(ms, tiffCodec, encoderParamsSave);
                File.WriteAllBytes(outputTiffPath, ms.ToArray());
            }
        }
    }
}