Hi Song403,
May I share my problem to someone as well.
I have similar problem like you. My people uses Visual Studio 2008 and try to retrieve data from USB (NI9229 via NI9162). When he ran program for testing, it had a message that 'VISANS is not a memeber of NationalInsturments'. it is similar to 'not found'.
We use Vistual Studio 2008 (try on 2010 and 2013 as well) and install Ni-Daqmx version 15.0.1 and VISA version 5.6.xx. I am not sure that the version of Ni-Daqmx and VISA version are compatible each other or not?
Some articles tell me that VISA is a legacy driver. The new version is NI-VISA.NET. It means we have to change VISANS to NI-VISA.NET. Is it correct or not?
If anyone know about this, please tell me that what is environment that is work for Visual Studio 2008 or 2010 or 2013.
Thank you in advance.
Fusiontechs