Marge tiff file.

If you google how to merge tiff files, there will many feasible suggestions. But right now, I have not yet found a free library to finish this job. If you find, please share with me. Thanks.

Hi, please try the code below, and you need the .dll spire.doc 
http://www.e-iceblue.com/Introduce/word-for-net-introduce.html
private static ImageCodecInfo GetEncoderInfo(string mimeType)
{
ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
for (int j = 0; j < encoders.Length; j++)
{
if (encoders[j].MimeType == mimeType)
return encoders[j];
}

throw new Exception(mimeType + " mime type not found in ImageCodecInfo");
}

///

/// This function will join the TIFF file with a specific compression format
///

/// Image array
/// target TIFF file to be produced
/// compression codec enum
public static void JoinTiffImages(Image[] images, string outFile, EncoderValue compressEncoder)
{
//use the save encoder
Encoder enc = Encoder.SaveFlag;

EncoderParameters ep = new EncoderParameters(2);
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.MultiFrame);
ep.Param[1] = new EncoderParameter(Encoder.Compression, (long)compressEncoder);

Image pages = null;
int frame = 0;
ImageCodecInfo info = GetEncoderInfo("image/tiff");

foreach (Image img in images)
{
if (frame == 0)
{
pages = img;

//save the first frame
pages.Save(outFile, info, ep);
}
else
{
//save the intermediate frames
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.FrameDimensionPage);

pages.SaveAdd(img, ep);
}

if (frame == images.Length - 1)
{
//flush and close.
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.Flush);
pages.SaveAdd(ep);
}

frame++;
}
Hope it will help you merge the multi tiff file to a singe one.