// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002190/bytearray-tobase64string

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        byte[] bytes = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 };

        Console.WriteLine("The byte array: ");

        Console.WriteLine("   {0}\n", BitConverter.ToString(bytes));

        // C# Extension Method: ByteArray - ToBase64String

        String s = bytes.ToBase64String();

        Console.WriteLine("The base 64 string:\n   {0}\n", s);

    }

}