Marshaling C++ struct with fixed size array into C#

Question

I have a C# struct declared like so:

public struct AdvertisementData {
    public byte SomeId;
    [MarshalAs(UnmanagedType.LPArray , SizeConst = 12)]
    pu         


        

Answer 1

Try to marshal it as ByValArray:

 [MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
  public byte[] AnArray;

And also, are you sure that you do not need to set any LayoutKind for your struct?