Question

I wanna know how it is possible to read a file in binary format.

for example a tiff image file may have the following binary format in hex 0000 4949 002A 0000.
how can i get these values in c#?

Answer 1

Here is how I usually read files in hexadecimal format, changed for the header, as you need:

using System;
using System.Linq;
using System.IO;

namespace FileToHex
{
    class Program
    {
        static void Main(string[] args)
        {
            //read only 4 bytes from the file

            const int HEADER_SIZE = 4;

            byte[] bytesFile = new byte[HEADER_SIZE];

            using (FileStream fs = File.OpenRead(@"C:\temp\FileToHex\ex.tiff"))
            {
                fs.Read(bytesFile, 0, HEADER_SIZE);
                fs.Close();
            }

            string hex = BitConverter.ToString(bytesFile);

            string[] header = hex.Split(new Char[] { '-' }).ToArray();

            Console.WriteLine(System.String.Join("", header));

            Console.ReadLine();

        }
    }
}