C# Calculate MD5 hash string

 public static string CalculateMD5Hash(string input)
        {
            // step 1, calculate MD5 hash from input
            var md5 = MD5.Create();
            byte[] inputBytes = Encoding.ASCII.GetBytes(input);
            byte[] hash = md5.ComputeHash(inputBytes);


            // step 2, convert byte array to hex string
            var sb = new StringBuilder();
            for (int i = 0; i < hash.Length; i++)
            {
                sb.Append(hash[i].ToString("X2"));
            }
            return sb.ToString();
        }