[StructLayout(LayoutKind.Explicit)]
struct OddUnion
{
/* The 32-bit integer value */
[FieldOffset(0)]
public int IntegerValue;
/* The bytes that overlap with it */
[FieldOffset(0)]
public byte Byte1;
[FieldOffset(1)]
public byte Byte2;
[FieldOffset(2)]
public byte Byte3;
[FieldOffset(3)]
public byte Byte4;
}
OddUnion myOddUnion;
myOddUnion.IntegerValue = 4096;
Byte secondByte = myOddUnion.Byte1;
int binary
0 00000000
1 00000001
...
127 01111111
128 00000001 10000000
129 00000001 10000001
...
255 00000001 11111111
256 00000010 10000000
...
16383 01111111 11111111
16384 00000001 10000000 10000000