Hi Atila,
I was using SAPBOBSCOM.dll 9.0 (X64 bit ) found under C:\Program Files and not C:\Program Files\SAP\SAP Business One DI API\DI API 90 my Comp windows operating system is 64 bit the Correct version . It will be good to Remind guys that this is an external VB.NET application and not an .ARD addon . I finally changed the Debug Mode to AnyCPU and compiled it and it succesfully connected to SAP HANA Database