private void txtText_TextChanged(object sender, EventArgs e)
        {
            /*Магия распознавания tiff по штрих-коду*/

            //code39Control1.Text = txtText.Text;
            code39Control1.Text = txtText.Text;
        }
 ...
foreach (Guid guid in tiffImage.FrameDimensionsList)
        {
            String FileName = txtTiffFilePath.Text.Substring(txtTiffFilePath.Text.LastIndexOf(@"\"));
            
            for (int index = 0; index < noOfPages; index++)
                {
                    FrameDimension currentFrame = new FrameDimension(guid);
                    tiffImage.SelectActiveFrame(currentFrame, index);
                    tiffImage.Save(string.Concat(pstrOutputPath, @"\", FileName , index , ".TIF"), encodeInfo, null);

                }
            }