Driver to control Keithley 3706A with visual basic application using ethernet cable

I'm trying to develop Visual Basic code to connect my PC to a Keithley 3706A multimeter via an ethernet cable, but I couldn't find this driver.
Can you please support me with this driver as soon as possible.

For basic communication over LAN, you can use raw sockets or you could obtain a VISA layer from Tek or NI, etc.

The IVI driver for 3706A contains the NI VISA runtime and leverages that for the communication.
There are some .NET examples distributed with the IVI driver.