Question

Hi i have tried to convert the c++ code below to c# but i don seem to get it right.
I got this below in .h header file

public: 
unsigned char inquiry_data[256];

Then the .cpp file

sa = (PSCSI_ADDRESS)&inquiry_data[0];

When i Go Definition of the (PSCSI_ADDRESS) i got this below:

typedef struct _SCSI_ADDRESS {
    ULONG Length;
    UCHAR PortNumber;
    UCHAR PathId;
    UCHAR TargetId;
    UCHAR Lun;

} SCSI_ADDRESS, *PSCSI_ADDRESS;

---

The below are what i have tried to convert to C#

 public byte[] inquiry_data = new byte[256];

 public class SCSI_ADDRESS
{   
    public ulong Length;
    public byte PortNumber;
    public byte PathId;
    public byte TargetId;
    public byte Lun;
}
 sa = (SCSI_ADDRESS)inquiry_data[0];

However, i keep getting errors at the line (SCSI_ADDRESS)inquiry_data[0]; with error Cannot convert type 'byte' to 'project1.Class.SCSI_ADDRESS'


Could you please advice?

Answer 1

For a start, that C++ code is relying on undefined behaviour. You cannot cast arbitrary sections of memory to complex types and then attempt to access them.

C# does not allow arbitrary casts like that. If you are interested in turning raw bytes into data, you want to look into C# serialization.