Question

// path1 and path2 point to different copies of the same assembly on disk:

    Assembly assembly1 = Assembly.LoadFrom(path1);
    Assembly assembly2 = Assembly.LoadFrom(path2);

// These both point to the assembly from path1, so this is true

Console.WriteLine(string.Compare(assembly1.CodeBase, assembly2.CodeBase) == 0);

Why assembly.Code is the same as assembly2.CodeBase?

Answer 1

Possibly it’s due to this (from the docs for Assembly.LoadFrom):

If an assembly with the same identity is already loaded, LoadFrom returns the loaded assembly even if a different path was specified.

Have you checked whether assembly1 and assembly2 are actually identical references?