using System;

 using System.Text;

 using System.IO;

 using System.Security.Cryptography;

  static void Main(string[] args)

         {

             CompareFileGetBytes("lyf.txt");

             Console.ReadLine();

         }

  static void CompareFileGetBytes(string fileFullName)

         {

             byte[] fileReadAllBytes = File.ReadAllBytes(fileFullName);

             string fileReadAllBytesMd5 = GetBytesMd5(fileReadAllBytes);

             string utf8Md5 = string.Empty;

             using (StreamReader reader = new StreamReader(fileFullName))

             {

                 string textResult = reader.ReadToEnd();

                 byte[] utf8Bytes = Encoding.UTF8.GetBytes(textResult);

                 utf8Md5 = GetBytesMd5(utf8Bytes);

             }

             string utf32Md5 = string.Empty;

             using (StreamReader utf32Reader = new StreamReader(fileFullName))

             {

                 string textResult = utf32Reader.ReadToEnd();

                 byte[] utf32Bytes = Encoding.UTF32.GetBytes(textResult);

                 utf32Md5 = GetBytesMd5(utf32Bytes);

             }

             Console.WriteLine($"fileReadAllBytesMd5:{fileReadAllBytesMd5},utf8Md5:{utf8Md5}");

             if (string.Equals(fileReadAllBytesMd5, utf8Md5))

             {

                 Console.WriteLine($"{nameof(fileReadAllBytesMd5)} is equal with {nameof(utf8Md5)}!");

             }

             else

             {

                 Console.WriteLine($"{nameof(fileReadAllBytesMd5)} is not equal with {nameof(utf8Md5)}!");

             }

             Console.WriteLine($"utf8Md5:{utf8Md5},utf32Md5:{utf32Md5}");

             if (string.Equals(utf8Md5, utf32Md5))

             {

                 Console.WriteLine($"{nameof(utf8Md5)} is equals with {nameof(utf32Md5)}");

             }

             else

             {

                 Console.WriteLine($"{nameof(utf8Md5)} is not  equals with {nameof(utf32Md5)}");

             }

         }

         static string GetBytesMd5(byte[] bytesData)

         {

             StringBuilder md5Builder = new StringBuilder();

             using(MD5CryptoServiceProvider md5=new MD5CryptoServiceProvider())

             {

                 byte[] md5Bytes = md5.ComputeHash(bytesData);

                 for(int i=;i<md5Bytes.Length;i++)

                 {

                     md5Builder.Append(md5Bytes[i].ToString("x2"));

                 }

             }

             return md5Builder.ToString();

         }