C# Definition:

[StructLayout(LayoutKind.Sequential)]
struct LUID {
   public uint LowPart;
   public uint HighPart;
}

VB Definition:

Structure LUID
   Public LowPart As Integer
   Public HighPart As Integer
End Structure

Notes:

Why is this defined as two ints instead of a long? As far as I can see there's no need to treat it as anything other than

an opaque 64 bit field