public static List<T> CreateTarInterface<T>(string dllpath)

{

List<T> rs = new List<T>();

var dlllll = Assembly.Load(dllpath);

foreach (var item in dlllll.GetTypes())

{

object objType = dlllll.CreateInstance(item.Namespace + "." + item.Name);

                if (typeof(T).IsAssignableFrom(objType.GetType()))

                    rs.Add((T)objType);

}

return rs;

}