OSI PI SDK

Do we need to install visual studio in same system where PI AF is present.

Just guessing when you say "PI AF" that you mean the AF Server, i.e. PISystem. The answer is NO. You will need to PROPERLY install the AF Client on the same PC where you have Visual Studio installed. And again, AF SDK is (at present) restricted to .NET Framework.

Just guessing when you say "PI AF" that you mean the AF Server, i.e. PISystem. The answer is NO. You will need to PROPERLY install the AF Client on the same PC where you have Visual Studio installed. And again, AF SDK is (at present) restricted to .NET Framework.

so what will be the alternate way to connect .net framework with PI system. Is there any guide or tutorials available?

This link contains the link by Asle as well as 2 other important links:

https://docs.aveva.com/category/af-sdk

The first link is the AF SDK Reference guide.

The last link is the AF SDK Getting Started guide.

Your PI Data Archive can be on a separate host than your AF Server. Your Visual Studio development PC can, and honestly SHOULD, be on a different host as well.

The important thing for you yet again is that you must properly install the AF Client on your Visual Studio PC. Do not try to just copy DLL's.

AshutoshDandsena​  Have a look here, to see a bunch of examples on getting started accessing PI data programmatically: https://github.com/AVEVA/AVEVA-Samples-PI-System?tab=readme-ov-file