There is another driver developed with NI for use with LabView:
https://sine.ni.com/apps/utf8/niid_web_display.model_page?p_model_id=1460
We don't provide any C# drivers aside from the IVI driver referenced below:
https://www.tek.com/en/support/software/driver/2700-software-0
With the 2700 being obsolete and unsupported, our programming support options are limited.
However, drivers are not required to program the instrument. You can develop a program in any language you prefer by writing the SCPI control commands as ASCII strings and performing a read to return any requested data or conditions.