How to convert an unmanaged structure pointer to byte[] in c

Question

Please help me to convert an unmanaged structure pointer to byte[] in c#?

public struct struct1
{
public byte a;
public int b;
}

struct1 objstruct= new struct1();
struct1* ptrStruct=&objstruct;
ptrStruct->a=1;
ptrStruct->b=4;

how can i convert ptrStruct to byte[]?

Vulpes · Answer

Do you mean that you want to convert the pointer itself to a byte array or the struct that it points to? The following code does both. In the latter case I've ignored the extra 3 bytes of padding which will bring the struct size up to 8 bytes: using System; public struct struct1 { public byte a; public int b; } class Program { unsafe static void Main() { struct1 objstruct = new struct1(); struct1* ptrStruct = &objstruct; ptrStruct->a=1; ptrStruct->b=4; byte[] ba; if(sizeof(struct1*) == 4) { ba = new byte[4]; uint ui = (uint)ptrStruct; byte* pb = (byte*)&ui; for(int i = 0; i } else { ba = new byte[8]; ulong ul = (ulong)ptrStruct; byte* pb = (byte*)&ul; for(int i = 0; i } Console.Write(pbStruct as a byte array is : ); foreach(byte b in ba) Console.Write({0:X2}  b); Console.Write(
*pbStruct as a byte array is : ); ba = new byte[5]; ba[0] = ptrStruct->a; byte* pb2 = (byte*)&(ptrStruct->b); for(int i = 1; i foreach(byte b in ba) Console.Write({0:X2}  b); Console.ReadKey(); } }