HashAlgorithm: Create()

   
 


using System;
using System.IO;
using System.Security.Cryptography;

class MainClass {
    public static void Main(string[] args) {
        using (HashAlgorithm hashAlg = HashAlgorithm.Create(args[0])) {
            using (Stream file = new FileStream(args[1], FileMode.Open, FileAccess.Read)) {
                byte[] hash = hashAlg.ComputeHash(file);

                Console.WriteLine(BitConverter.ToString(hash));
            }
        }
    }
}