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string extension = Path.GetExtension(guid);

                if (extension == ".gif")
                {
                    //return the file from storage
                    // Get original file
                    FileContainer container = imageHandler.GetFile(guid);

                    var fileStream = container.Stream;
                    // return File(pageImage.Stream, GetContentType(_convertImageFileType));

                    byte[] Bytes = new byte[fileStream.Length];
                    fileStream.Read(Bytes, 0, Bytes.Length);
                    string contentDispositionString = "attachment; filename=\"" + displayName + "\"";


                    contentDispositionString = new ContentDisposition { FileName = displayName, Inline = true }.ToString();



                    HttpContext.Current.Response.ContentType = "image/jpeg";

                    HttpContext.Current.Response.AddHeader("Content-Disposition", contentDispositionString);
                    HttpContext.Current.Response.AddHeader("Content-Length", fileStream.Length.ToString());
                    try
                    {
                        HttpContext.Current.Response.OutputStream.Write(Bytes, 0, Bytes.Length);
                        HttpContext.Current.Response.Flush();
                        HttpContext.Current.Response.End();
                    }
                    catch (HttpException x)
                    {
                        // Ignore it.
                    }
                }
                else
                {
                    //process file with ViewerImageHandler
                    List<PageImage> pageImages = imageHandler.GetPages(guid, imageOptions);
                    PageImage pageImage = pageImages.Single(_ => _.PageNumber == pageNumber);
                    var fileStream = pageImage.Stream;
                    // return File(pageImage.Stream, GetContentType(_convertImageFileType));

                    byte[] Bytes = new byte[fileStream.Length];
                    fileStream.Read(Bytes, 0, Bytes.Length);
                    string contentDispositionString = "attachment; filename=\"" + displayName + "\"";


                    contentDispositionString = new ContentDisposition { FileName = displayName, Inline = true }.ToString();



                    HttpContext.Current.Response.ContentType = "image/jpeg";

                    HttpContext.Current.Response.AddHeader("Content-Disposition", contentDispositionString);
                    HttpContext.Current.Response.AddHeader("Content-Length", fileStream.Length.ToString());
                    try
                    {
                        HttpContext.Current.Response.OutputStream.Write(Bytes, 0, Bytes.Length);
                        HttpContext.Current.Response.Flush();
                        HttpContext.Current.Response.End();
                    }
                    catch (HttpException x)
                    {
                        // Ignore it.
                    }
                }