Hello Vladimir,
many thanks for your reply and for taking the time to check the deployment of PDFBox.
Unfortunately I can not make it work using any known .NET assemblies out there, also my own built assembly will not work.
I am now trying to use the Java pre-built .jar package from PDFBox site that you suggested.
It is referenced it in JavaBridge as shown in attached screenshot javaBridge.jpg, but still text will not be stripped from PDF document - text.length() will always be 0...
I wonder if you could verify that code in the first two functions is correct (third one will throw an error as specified in the comment) - see attched functions.jpg
Many thanks again for your attention,
Marin