Convert C++ struct to C#

Question

I have a C++ struct below:

struct CUSTOM_DATA {
   int id;
   u_short port;
   unsigned long ip;
} custom_data;

How can i convert it to C#

Answer 1

[StructLayout(LayoutKind.Sequential)]
struct CUSTOM_DATA {
   int id;
   ushort port;
   uint ip;
};
CUSTOM_DATA cData ; // use me 

edit: thx reed