Can I use Activator.CreateInstance with an Interface?

Question

I have an example:

        Assembly asm = Assembly.Load(\"ClassLibrary1\");
        Type ob = asm.GetType(\"ClassLibrary1.UserControl1\");
        UserContro         


        

Answer 1

If the library was referenced in the project you may use:

    static public IEnumerable GetTypesFromLibrary(String library)
    {
        var MyAsemblies = AppDomain.CurrentDomain.GetAssemblies()
                         .Where(a=>a.GetName().Name.Equals(library))
                         .Select(a=>a);
        var Exported = MyAsemblies
                         .FirstOrDefault()
                         .GetExportedTypes();
        var Asignable = Exported
                         .Where (t=> !t.IsInterface && !t.IsAbstract
                         && typeof(T).IsAssignableFrom(t))
                         .Select(t=>t)
                         .AsEnumerable();
        return Asignable;
    }

    static public T GetInstanceOf(String library, String FullClassName)
    {
        Type Type = GetTypesFromLibrary(library)
                        .Where(t => t.FullName.Equals(FullClassName))
                        .FirstOrDefault();
        if (Type != null)
        {
            T Instance = (T)Activator.CreateInstance(Type);
            return Instance;
        }
        return default(T);
    }