The versions that are currently installed by our latest driver, NI-DAQ 6.9.3 are compatible with the .NET environment. These two libraries are installed to \Program Files\National Instruments\NI-DAQ\Lib by default when you choose to add Visual C support for the driver during installation. Simply link against these two files and you will be able to make calls directly into our driver from the Visual C .NET environment.
Regards,
Justin Britten
Applications Engineer
National Instruments