C++/CLI Conversion of byte* to Managed Byte[]

Question

I'm in a C++/CLI project, and I have a byte* variable that I want to fully convert into a managed array<byte> as efficiently as possible.

Currently, the only way that I've seen is to manually create the managed array<byte> object, and then copy individual bytes from the byte* variable, as shown below:

void Foo(byte* source, int bytesCount)
{
   auto buffer = gcnew array<byte>(bytesCount);

   for (int i = 0; i < bytesCount; ++i)
   {
      buffer[i] = source[i];
   }
}

Is there any other way to do this more efficiently? Ideally, to not have to copy the memory at all.

If not, is there any way to do this more cleanly?