LabView IO Class Implementation Query

[_T_M_]

Hi All,

I have a problem with a correct implementation of IO control. The problem goes like this.

I have a user interface for a DUT which uses TCPIP, Serial and USB connection. On user interface, type of connection is selected from a drop down. which lets user input address of the DUT. This loads the appropriate class implementation for the module.

I am trying to avoid having three IO input controls on the interface, and ideally trying to avoid creating abstractions for the parent class to implement the required class. 

I have tried type casting but there are mismatches at different parts of the code where some methods are expecting TCPIP instr. session as an input. I will need to use type casting in a lot of places and I am trying to avoid it. 

"To a more specific class function does not work with IO VISA Class".

Is there a more cleaner way to programmatically select correct VISA class?

 Any help will be appreciated! 

[JÞB · Accepted solution]

In few words...

IVI: Interchangeable Virtual Instrumentation. VISA isn't where you want to be.

[_T_M_]

Thank you for your help 🫨