using System; using System.Data; using System.Text.RegularExpressions; using System.Text; class Class1{ static void Main(string[] args){ foreach (byte b in Base64DecodeString("AAAA")) Console.WriteLine(b); } public static byte[] Base64DecodeString(string inputStr) { byte[] encodedByteArray = Convert.FromBase64CharArray(inputStr.ToCharArray(), 0, inputStr.Length); return (encodedByteArray); } }