Simple Unsafe Structs

tryjsil.cs

using System;
using System.Runtime.InteropServices;

public static class Program {
    public static unsafe void Main (string[] args) {
        var bytes = new byte[8];

        fixed (byte* pBytes = bytes) {
            var pStruct = (MyStruct*)pBytes;
            *pStruct = new MyStruct {
                Int = 2,
                Float = 3.5f
            };

            for (var i = 0; i < bytes.Length; i++)
                Console.Write("{0:X2} ", bytes[i]);

            Console.WriteLine();
      
            bytes[0] += 1;
            bytes[1] += 2;        
            bytes[6] += 1;
          
            Console.WriteLine(*pStruct);
        }
    }
}

public struct MyStruct {
    public int Int;
    public float Float;
  
    public override string ToString () {
        return String.Format("Int={0:0000}, Float={1:000.000}", Int, Float);
    }  
}