Your application should not depend on the installed version of WinSCP.
It should have its own copy of compatible WinSCP.
You better use NuGet package, which does everything automatically for you:
https://winscp.net/eng/docs/library_install#nuget

Hi,

I created C# scripts which are working with WinSCPnet.dll. It works fine, but everytime when I update WinSCP, the scripts stop working due to different version. So after update I have to compile all scripts again..

Is here some way how just use old version in C# scripts no matter which version is installed?

Thanks in advance...