PInvoke when you don't know the DLL at compile time?
See the question and my original answer on StackOverflowThee is a solution here: Dynamically calling an unmanaged dll from .NET (C#) (based on LoadLibrary/GetProcAddress)
Simon Mourier's blog (1807 answers on StackOverflow) about Microsoft technologies C#, C/C++, .NET, WinRT, WinUI3, AOT, P/Invoke, COM, Interop, DirectX, Direct2D, Windows, ...