C# - Retrieve MD5 Hash of a File

FileHashRetriever.cs

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

namespace FileHashCompare
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Enter file path : ");
            string filename = Console.ReadLine();
            string hash = string.Empty;

            using (var md5 = MD5.Create())
            {
                using (var stream = File.OpenRead(filename))
                {
                    hash = BitConverter.ToString(md5.ComputeHash(stream)).Replace("-", "").ToUpper();
                }
            }

            Console.WriteLine(hash);
            File.WriteAllText("Output.txt", hash);
            Console.Read();
        }
    }
}