Leadtool17.5 Serachable PDF

I'm trying to save Searchable PDF from TIF format images after OCR.
I writed PdfDocumentOptions, ImageOverText = true.
But Result pdf image is not searchable.
I'm using 17.5 .net C#, Advantate OCR.
Could you please explain to me what is wrong ?

         public void ThreadProc(object data)
        {
            ThreadData threadData = (ThreadData)data;
            string strImageFilePath = threadData.strImageFilePath;

            using (IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false))
            {
                 try
                {
                    string strModuleDirectory = String.Concat(m_strModuleDirectory, @"OcrAdvantageRuntime\");
                    ocrEngine.Startup(null, null, null, strModuleDirectory); //OcrAdvantageRuntime path

                    ocrEngine.LanguageManager.EnableLanguages(m_strLang); //"en"

                    CIniUtil clsIni = new CIniUtil();
                    string strPath = clsIni.getIniValue("ENVIR", "DstPath", threadData.strIniFilePath);
                    Directory.CreateDirectory(strPath);

                    string strFileName = Path.GetFileName(strImageFilePath);
                    string strDstImageFilePath = String.Concat(strPath, strFileName);

                    strDstImageFilePath = Path.ChangeExtension(strDstImageFilePath, "pdf");

                    DocumentWriter docWriter = ocrEngine.DocumentWriterInstance;
                    PdfDocumentOptions pdfOption = docWriter.GetOptions(DocumentFormat.Pdf) as PdfDocumentOptions;
                    pdfOption.ImageOverText = true;
                    pdfOption.AssemblyEnabled = true;
                    pdfOption.CopyEnabled = true;
                    pdfOption.EditEnabled = true;
                    pdfOption.Protected = false;
                    pdfOption.PageRestriction = DocumentPageRestriction.Relaxed;
                    docWriter.SetOptions(DocumentFormat.Pdf, pdfOption);
                   
                    using (IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument())
                    {
                        ocrDocument.Pages.AddPages(strImageFilePath, 1, -1, null);
                        ocrDocument.Pages.Recognize(null);
                        ocrDocument.Save(strDstImageFilePath, DocumentFormat.Pdf, null);
                    }
                }
                catch (Exception ex){}
                finally{}
            }

            threadData.WaitHandle.Set();
        } //ThreadProc

File Attachment(s):

OCR1.pdf (52kb) downloaded 31 time(s).

The Version of Leadtools.Forms.DocumentWriters.dll is "17.5.0.5"

 julia78 wrote:

The Version of Leadtools.Forms.DocumentWriters.dll is "17.5.0.5"

DotNet4

Debug Output of Debug/Release Mode is not searchable PDF.

Not debug mode (direct execution) is searchable PDF.

please why?

To see the DLLs, click on View -> Lower Pane View -> DLLs.

To see the path of the DLLs, click on View -> Select Columns, go to the DLL tab, and select the Path checkbox.

Hello! First, thank you for your response.

I have used process explorer but directory of  Leadstools dlls is same.

File version of Leadtools.Forms.Document.dll is 17.5.0.5,  Product Version is 17.5.4.0 and Runtime version is v4.0.30319.

What can i do for checking difference result between debug mode and not?

File Attachment(s):

loaded dll Windiff.jpg (548kb) downloaded 31 time(s).