What is the most efficient way to convert a std::vector to a .NET List?

Answer 1

If you're really that concerned about it, use unverifiable code instead:

List^ MethodA()
{
    std::vector const& runList = mpChannelNode->runList();
    array^ ret = gcnew array(runList.size());
    if (runList.size())
    {
        pin_ptr dest = &ret[0];
        std::memcpy(dest, &runList[0], runList.size() * sizeof(unsigned));
    }
    return gcnew List(ret);
}

That said, I'd be surprised if there was a noticeable difference either way...