Is it possible to put the path to the included dll into some external file?

Question

Visual Basic

In the VB.net project, I include the dll like this:

<DllImport("dll.dll",
               EntryPoint:="Test",
               SetLastError:=True,
               CharSet:=CharSet.Ansi,
               ExactSpelling:=True,
               CallingConvention:=CallingConvention.Cdecl
              )>

Is it possible to somehow replace the path and the dll itself with a variable that would be initialized from some configuration file? For example, having one project on vb.net and a set of library versions, switch between them. (The solution is of interest for any dll)

Answer 1

An unmanaged dll can be loaded dynamically via LoadLibrary by specifying the path to it.
The order is something like this:
1. LoadLibrary with the path to the dll.
2. GetProcAddress gets an unmanaged function pointer in the dll.
3. Marshal.GetDelegateForFunctionPointer converts an unmanaged function pointer into a delegate that can be used in the usual C# way.
4. FreeLibrary exits the dll.
More details and with an example
Well, you need to work with managed ones through the Assembly class.
For example, loading an assembly is Assembly.LoadFrom(string)