[Python.NET] Efficient copy of .NET Array to ctypes or numpy array.

I need to copy a .NET Array (e.g. Double[] or Byte[]) to a numpy array, but it seems the only way to do so is element by element, which is very slow. Since we are copying a lot of data in real time, it creates a real bottleneck. Alternatively, efficient conversion of the .NET array to a Python style byte string would allow numpy.fromstring() to be used for creating the numpy array. (I see a similar question went unanswered on the list in August 2011, but I was hoping someone may have figured it out by now.) Thanks, Dave Cook