asp.net - C#: How do I convert a multi-page TIFF via MemoryStream into one long image?

Question

So I have been able to take a multi-page TIFF file and convert it to a single jpeg image but it flattens the TIFF. By flatten it, I mean it only returns the first page. The goal is to retrieve the TIFF (via memory stream), open each page of the TIFF and append it to a new jpeg (or any web image). Thus creating one long image to view on the web without the aid of a plugin. I do have the MODI.dll installed but I am not sure how to use it in this instance but it is an option.

• Source Code (using a FileHandler):

  #region multi-page tiff to single page jpeg
  var byteFiles = dfSelectedDocument.File.FileBytes; // <-- FileBytes is a byte[] or byte array source.
  
  byte[] jpegBytes;
  using( var inStream = new MemoryStream( byteFiles ) )
  using( var outStream = new MemoryStream() ) {
  System.Drawing.Image.FromStream( inStream ).Save( outStream, ImageFormat.Jpeg );
  jpegBytes = outStream.ToArray();
  }
  
   context.Response.ContentType = "image/JPEG";
   context.Response.AddHeader( "content-disposition", 
      string.Format( "attachment;filename="{0}"",
      dfSelectedDocument.File.FileName.Replace( ".tiff", ".jpg" ) ) 
   );
   context.Response.Buffer = true;
   context.Response.BinaryWrite( jpegBytes );
  #endregion
  

Answer 1

have you compressed the jpeg? https://msdn.microsoft.com/en-us/library/bb882583(v=vs.110).aspx